Q2 : I dont really know maybe
www.dimarzio.com
Q3 : Depends on what you wanna do with this guitar ! If you want a 7vwh then put everything out get a wiring diagrams of the jem 7vwh and wire it back ....
Q4 : For the neck questions and can not tell ...send me somes pictures ...
Q5 : Like I said above if you want to sell the body then sell it to me a buy another one on EvilBay ....
I dont think that somebody would trade his 7vwh alder body .....
Q6 : Dont do a DNA They look great but stay in the vwh line....
750 USD is a good deal . If you want to sell everything thinks of me
Ced
PS : Hope I helped you a little ....