I say rex, either Block off land from Elizabeth, or let her settle/develop it for you. Keep horses away from her, but wait till Construction for Cats/Ele's to take her out, on a one way date.
Due to Jungle to your west, you limited in expansion options. As long as Lizzie has no metal, horses, she's just saving you settlers/workers at Construction.
Great Lighthouse, as most cities will be coastal, its worth thinking about, maybe Lizzie will build it for you? She has a coastal city in London.
Answers to Questions not asked as yet.
1) Change all era's to White, you know what era your in without looking at dates (sorry BUG developers, but that's my opinion, I
BUG)
2) Alt-X brings up the City mapping function, Cnt-X, if you reload game brings previous Maps
3) You definitely need more workers.
4) I like to set out cities to settle in waves, ie Green for 1st, yellow 2nd, red 3rd, white fillers. (P.S. Can I change the colour order in bug??, ie default Green)
5) 2nd city should be Ele/Rice, I dont' think you'll have time to beat AI, don't they start with 2 Scouts, 1 worker on Immortal setting. Lizzie, will be building a settler now as we speak, to go with the 4 Archers she probably has in capital.