Some random thoughts
If we prepare land below chokes for Ghandi and let Otto and Carth divide up top half they could both have a decent core. Agree there is a danger with Otto's UU, but there is a fair chance Ghandi will get rifles and hopefully infantry from GLib and if Otto beats up on him we could always lend Ghandi a hand (

whose side are we on anyway?). I am unsure on best decision here.
I would see Spain as ideal recipient of gifted towns as Ghandi approaches with alliance ensuring Ghandi takes the town. A civ on the same continent would be too risky. Does anyone know what order the AI play in. Ideally we should gift city and ensure alliance in our turn to somone who comes after Ghandi preventing them from rushing units.
An alternative, less costly, but more risky solution to boxing Ghandi in wit unit or city on every tile.
Allow Ghandi to take cities in mountain ring (these would be more useful to Ghandi than us and allows possibility of Ghandi sending boats out to undefended cities on islands (eg eastern jungle isle). This may help with ensuring Ghandi has required modern age resources).
To prevent WW we would need to kill off all landings threatening our core cities until we are ready for gifting - defending, even successfully, results in WW, but successful attacks do not. This could involve blocking strategic mountains to establish landing zones on the flat.
Important point. We do not want to allow Ghandi to attack T before jumping palace. We cannot gift the capital and if we abandon it before setting up overseas city as new capital then we may find capital jumping to WV - not the result we want as abandoning this in a palace jump would lose the GLib.
Currently we do not have the infrstructure to support a large invasion force. Waiting until astronomy and using caravels reduces (? removes) sinking risk and allows transport of more units per turn. Remember differential movement on so starting and finishing crossing from sea tile a big advantage.
Waiting for MT is poss too long and an optional tech to boot. Perhaps AI will research chiv allowing a contingent of knights to augment our zerk attack?
Considered building SoZ but these have little benefit v GSs and by time its built its advantage may be gone.
Also little benefit in GLH as unlikely to beat AI to it and probably have astronomy by then anyway.
Celts look to becoming cultural kings. I suggest removing them completely so we can use their cities without flip risk. Americans appear to share island / continent with Celts (havn't seen American city or borders yet but American warrior outside green borders and they lack MM). Only seen borders of 2 Celt cities - neither on coast

. Note great city site not settled which exploring curragh has just passed - cow, wheat, oysters and BG all visible within potential city radius. I'll bet its taken by the time we could get a settler there.
I believe the most important strat at present is fast science.
Faster science means sooner to superior units to conquer and travel overseas, sooner to set up OS base and prepare to give Ghandi stating continent, sooner to trade for / obtain OS luxes, more techs to hand Ghandi via GLib.
Currently paying unit support - need more cities, stategic markets, a few cities to grow size 7 (currently only 1 - WV).
Also req libs to speed research.
FP to reduce corruption, and to help out with starting continent corruption following palace jump.
Once we have these we should have a more efficient empire to support barracks and units.
GA should give us a good science boost through middle ages.