Crew for my Sparviero

I have this old Airfix kit… I’m going to detail it a little, like an instrument panel, the interior ribbing, torpedo mounts, etc… but I want also a new crew for it… the two pilots and dorsal gunner (only three figures… they must be five!) provided with the kit are so innacurate (dorsal gunner are bigger than the pilots!) and these figures are also provided with the Airfix B-24J… so I need new figures for my plane… Another thing: I have a lot of German crew figures, in 1/72… these are from my three Italeri He-111 and my Do-217K-2 (instruction sheets says not to use them)… can I use them?.. and how to paint them if I can use them (I mean the Italian uniforms)