i agree w/ everyone on QT. u might be super excited b/c u got animals up to age/size, but u don't wanna risk your animals (or investments). how would u feel if u your animals got sick or if u had to pay a ton of vet bills? what would it be like if u lost an animal? i think that would suck.
hybrids are an interesting project. i'm sure it won't be easy. besides fertility issues with the offsprings, are there other defects associated with Wall Pythons or other hybrids? also why stop at Wall Pythons? go big and make ReticuBALLated Pythons.
anyway make the right choices with your projects. good luck.