Nice. This was the first pbg kit I built as well, you would be okay with a minor shave of the neck, they use a fairly standard profile dual action rod that sits in a channel about 10mm deep and 6mm wide. I did some fairly hectic reshaping on mine around the neck tenon and the heel area.
Ive found the neck comfortable whilst being chunkier, I play a mix of g style, f style, ibanez style necks and it feels bigger, but not baseball bat ridiculous.