My 2nd build was an
EX-1 and strongly recommend thoroughly checking scale length as there is minimal travel on the tuneomatic bridge.
The scale length is 24.75" from inner side of nut on treble side to mid point of high E bridge saddle. On mine the neck ended up sitting a few mm further into the body which ended up leaving no room for neck pickup mounting ring and went with top loading as a work around solution. You can check the build diary out from hyperlink in my signature.
Also suggest finishing as much as you can with the neck and body separate as it is an unusual shape and becomes a beast to work with once neck has been set.
Good luck and don't hesitate to ask any questions.
Cheers, Waz