With the need to accommodate a baby seat, may have to go for S3 or Golf R. A 1 or 2 series BMW May also be ok.
Owning German without warranty seems dicey.
Extra garage would solve a lot of problems
I'd never put a baby seat in a 2-door car. In the event of an accident; I don't want more challenges getting my child out. Even daily runs to and from daycare getting a child into a child seat in a coupe is a PITA (esp. on your back).
Maybe consider a used IS-F? Those are decently priced now.