I’m a fan of Caesar!, both at 2p and solo. And I know you’ll be solo-ing it, so this is to let you know that the Poison and Centurion expansions really elevate the game for solo play! You don’t need to start with them included, but I’d suggest adding them into the mix fairly soon.
(Edit: Some old comments (and follow-ups) here. I haven’t played this in too long…)