If you plan on carrying the 75 Compact in DA, it'll require a long reach and a long pull for the finger. If you hands that can palm a basketball, you're good to go.
I have medium to small hands and I can reach the DA pull on my P-01 fine.
Personally I like the rail on the P-01. I have no qualms about using the P-01 for home defense and as such like the rail. I don't find it makes concealing any harder, but I use Crossbreed style holsters if that makes a difference.