Thanks Jeff that's kind of what I had figured and I probably won't end up going that route. At least not yet
Anyway I'm starting to get a parts list together. I'm looking at this txv. As I Believe it has the check valve built in? Everything else is what it should be what I need as its a 12kbtu and I plan to run propane.
Surplus City Liquidators
(Sorry my phone crashes when I hit the link button)
Surplus City Liquidators
And this for the reversing valve.
So I have two comressors and two evaporator and one condenser that are 12-14kbtu and one 2.5 ton condenser and one 2.5 ton evap.
I'm think just for learning purposes I'll stick with all 1 ton parts for now.. Maybe at some point I'll do some kinda two stage thing with both compressors and the 2.5 ton stuff.
I've been following Memphis and his multiple builds and have learned a lot from those.