Re: Maple or Mahogany?
This is based on what I've read, so it's just my opinion. I'll say mahogany, but with options. For blues, you're playing a body with complex overtones, mahogany, so you can probably get away with maple necks because they tend to direct more energy of the strings to the body, which emphasizes the body wood. Mahogany + mahogany = Les Paul tone, Mahogany + Maple will not sound the same, but close enough in my opinion.
All else being equal, i.e. bodies with the same amount of resonance, mahogany will have complex overtones and a tiny amount of absent mids (but not much), depending on the frequency. I usually go by
The Jemsite frank falbo wrote. If you want lots and lots of complex overtones (which give blues some soul and mojo), swamp ash and mahogany bodies are very good.
This is just my opinion. For what it's worth, I don't think the maple neck you got is a bad thing, so long as it's well assembled so that it directs vibration to the body. My Lite Ash Strat is swamp ash with all-maple neck and it's got tons of soul tone with 3 Alnico II Pro Staggered pickups.
Again, the above is my opinion based on what I've read.