Hello from Texas

I managed to get a SF750 off newegg at retail price recently and can't wait to get the rest of the parts for my first SFF build. The dream is to get lucky with a 3080FE and pair it with a 5600x. Other than hunting down parts the real struggle is deciding on a case. Do I dare cram a 3080FE in a Velka 7? Do I try to grab a T1 v1.2 when it comes out? I also love the m1 and anything Sliger makes. How does anyone decide on a case!?