No worries bro! Hell your more knowledgeable than all the dudes on z400 central. I just figured that the kit would work. I just bought a 3 mod kit for my Raptor but it's a pretty proven kit so I'm not concerned about it but the 400 is pretty foreign because I never talked to anyone knowledgeable about them.
I'm probably going to have her keep the lid on the bike because sometimes we get into some pretty wet conditions. So what you are saying is the only things worth getting would be the jet kit, pipe, and a pro design intake.
Lifetime member of H.O.B.2.M.B.R.S.T. Club
08 Raptor 700R Barker Duals/Monster Intake/ PC v
08 Suzuki Quadsport Z400 CT Racing Pipe/ProFlow Intake/DynoJets