I'm fairly certain they are FD-3N, dual-coils. If I recall, they are 3 wire. They can be wired internally series/parallel, or as a pair in series or parallel.
I honestly don't want to give input as it's been a few months since I've owned a Combustion. I do remember with the EQ on board, it was easy to dial in a lot of variety.
White and Black Pearloid are the options for pickguards.
Color for Combustion (non NG's), with the standard body wood in parenthesis:
Gloss Metallic Black (Alder)
Gloss White (Alder)
Natural (Ash)
2 tone Blackburst (Ash)
Vintageburst (Ash)
Transparent White (Ash)
Matte Black (Alder) with Matching headstock
I believe the standard body woods are predicated by the body color. The transparent ones are Ash, and the solid ones are Alder. But, it may be an option to get Ash on a solid finish, I'm not sure (the options list suggests it is, but you'll want to ask a dealer or Dingwall directly).
I don't buy into the tone wood thing too much myself. I believe that strings, player, preamp, amp etc. all play such a larger role, that any tone nuances by different woods in a solid body, electric instrument, are extremely minimal. But, that is just my belief - and a
huge can of worms at that
Hope I helped a little tiny bit! Talking to a dealer, or people at the shop, are the best way to get accurate, direct and quick answers (they pretty much always answer emails the same day, in my experience).