Just some CSA questions if they won/lost
- Would they rename Richmond to like something else, say Jefferson D.C.
There would be no reason to do so. Richmond would remain Richmond. However, the CSA constitution did have a provision for Congress to establish the same sort of capital-from-scratch that the US Constitution did. As for the name, there would be no single Washington-esque figure for the CSA (victorious General-in-Chief, President of Constitutional Convention, AND First President). It might be named Washington as well.
- Would Robert E. Lee run for president?
If he were healthy enough, there would have been many politicos who would have urged him to serve.
- Is there anybody else that could've been the President of the CSA during the war?
As mentioned above, any of the other contenders during the Provisional Convention might have swung it. Whether they would have been better choices is anyone's guess.
- Would Britain and France, honestly, really be allies with them (IMO, no, since they'd only ally them for cotton, but that was starting to die out)
Sure, for power politics reasons. Once it was obvious that the CSA could win on its own.
- And would the CSA be expansionist in Africa?
What for? It would have its hands full in the Caribbean.
Bonus question:
If the CSA won, would've D.C. been abanonded and moved to say New York since the capital is right next to there enemy?