I'm reusing old PC case from early 2000s and it supports ATX, Baby(whatever that is), Mini ATX, and Micro ATX. I am open to any of these layouts. I am interested in doing a water cooled system because air flow in this case seems minimal. Not sure of case brand but was a Optima Pc. The build will be for gaming, and I want the motherboard that will give me the most space for radiator, res. ect. Any suggestions?