Xerol
Emperor
Also remember the Samurai don't require horses - kind of ironic since you're able to see them from the start, and the only reason I can see going after them is to deny them to the AI.
My test game I didn't get as quite a good start, and I couldn't fit 10 opponents on a Standard continents map. But I played through the AA anyway. I managed to get 4 good cities out before I was boxed in; I set it up as 70% Water Continents and drew 7 opponents on my landmass, meaning there's an empty continent out there somewhere, and it WAS a very crowded start. (Note: I did settle a large desert to the SE of my capital with 3 other cities, which spent most of the AA building 10- or 7-turn catapaults.) I had China north, Persia east, England southeast, India southwest(water was due south), and Germany northwest. Zulu were farther southeast, past Persia, and Babylon was north of Germany/China. China only had 6 cities from the start, and Babylon about 10. China and Germany teamed up on Babylon from the time Iron was out, and I sent about a dozen swords up there(mostly upgraded warriors). Razed one city, captured another, and settled two towns(one within Babylon's 1000+ border). Got peace for all 3 available middle age techs(mono, feudalism, and engineering) plus a distant island town; Babylon is the only city remaining on the mainland but I didn't have any coastal cities to get the 3 sitting on nearby islands. Germany got two, China got none and was also subsequently run over by German Cavalry, this was in 10BC by the way. (I, on the other hand, had just switched to Monarchy and was 40-turning chivalry. I still didn't have republic, but WW would've killed me at this stage.) Germany was tech leader by far, although apparently they went straight for MT(something I've never seen happen) since I recently got UP on them by Theology and traded it for Invention + GPT. (This is wierd in itself; I've NEVER seen the AI ignore the top half of the MA tech tree.) Meanwhile someone trades Education to the English and their GL is obsolete, but that doesn't mean it's useless to me. Right now I'm 4 turns from Chivalry, have a Chinese Iron hooked up, and Granary/Library prebuilds in every city so I'll have between 6-7 sams within 2 turns of getting the tech. England had a few desert cities taken by Persia meaning with a Persian RoP I can be on the GL's front stairs in a couple of turns, and hopefully Germany will do some trading and I can get MT for free. England's in bad shape; no Iron or Horses and they're stuck with spears. I'm 5th biggest out of 7 remaining Civs(China's gone; Babs and England are down to 3 each). But I didn't manage to grab one wonder, mostly because of (1) noncoastal start and (2) I've been building military, temples, and barracks the whole game. I probably could've taken 2 more Chinese cities if I had Medieval Swordsmen available, but I'm stuck with vanilla, so no dice there.
As far as the extra defence point goes: I think it'll be great - AI Knights will just bounce off of them, and you won't have to build escorts or bring in defensive units from your core when conquering.
My test game I didn't get as quite a good start, and I couldn't fit 10 opponents on a Standard continents map. But I played through the AA anyway. I managed to get 4 good cities out before I was boxed in; I set it up as 70% Water Continents and drew 7 opponents on my landmass, meaning there's an empty continent out there somewhere, and it WAS a very crowded start. (Note: I did settle a large desert to the SE of my capital with 3 other cities, which spent most of the AA building 10- or 7-turn catapaults.) I had China north, Persia east, England southeast, India southwest(water was due south), and Germany northwest. Zulu were farther southeast, past Persia, and Babylon was north of Germany/China. China only had 6 cities from the start, and Babylon about 10. China and Germany teamed up on Babylon from the time Iron was out, and I sent about a dozen swords up there(mostly upgraded warriors). Razed one city, captured another, and settled two towns(one within Babylon's 1000+ border). Got peace for all 3 available middle age techs(mono, feudalism, and engineering) plus a distant island town; Babylon is the only city remaining on the mainland but I didn't have any coastal cities to get the 3 sitting on nearby islands. Germany got two, China got none and was also subsequently run over by German Cavalry, this was in 10BC by the way. (I, on the other hand, had just switched to Monarchy and was 40-turning chivalry. I still didn't have republic, but WW would've killed me at this stage.) Germany was tech leader by far, although apparently they went straight for MT(something I've never seen happen) since I recently got UP on them by Theology and traded it for Invention + GPT. (This is wierd in itself; I've NEVER seen the AI ignore the top half of the MA tech tree.) Meanwhile someone trades Education to the English and their GL is obsolete, but that doesn't mean it's useless to me. Right now I'm 4 turns from Chivalry, have a Chinese Iron hooked up, and Granary/Library prebuilds in every city so I'll have between 6-7 sams within 2 turns of getting the tech. England had a few desert cities taken by Persia meaning with a Persian RoP I can be on the GL's front stairs in a couple of turns, and hopefully Germany will do some trading and I can get MT for free. England's in bad shape; no Iron or Horses and they're stuck with spears. I'm 5th biggest out of 7 remaining Civs(China's gone; Babs and England are down to 3 each). But I didn't manage to grab one wonder, mostly because of (1) noncoastal start and (2) I've been building military, temples, and barracks the whole game. I probably could've taken 2 more Chinese cities if I had Medieval Swordsmen available, but I'm stuck with vanilla, so no dice there.
As far as the extra defence point goes: I think it'll be great - AI Knights will just bounce off of them, and you won't have to build escorts or bring in defensive units from your core when conquering.