+1
I'd say nitro is the way to go, although you can get decent results with some of the waterbased lacquers.
But if you've never done any finishing, I suggest you first read some good finishing books and tutorials, find an inexpensive guitar, and practice your technique... Best to make your mistakes (and they will happen) on a throw-away rather than your nice new Warmoth.
Also, if at all possible, get some figured maple scraps for testing your dye method. Again, practice, practice, practice before committing it to the real thing.
Don't rush it! "Patience is a virtue" definitely applies when it comes to guitar finishing.
Mike