Hey, this is my first post here, been a longtime lurker.
My previous guitar-building experience was my so-called eBay guitar, which I built from a prefinished NOS Kramer body, Jackson neck, EMG pickups, and GFS locking trem all netted for a song via ebay.
For my second project, I'm looking at something a little more involved. My father is a fairly skilled woodworker and I've built tables and the like, but he doesn't know much about guitars themselves and while I know quite a bit about building and repairing six-strings, I'm a little unsure of where to start because I'd like to build a seven-string guitar.
I'm looking at a harder-edged Explorer-style body, fairly similar to the old ESP ones before they became all dagger-ish. Construction would probably be neck-through or set, with a quartersawn maple neck (or laminates, depending on local availability) and chambered mahogany or maple wings/body, with a top of some to-be-determined attractive wood, probably maple or walnut depending on which strikes my fancy and is readily available.
I've done some research, and I'm interested in people's opinions on the following:
-Scale length: do I go for a Schecter-style 26.5" scale length for extra low-B tension, or is a 25.5" scale generally okay for seven-strings, even if I'm looking at dropping the low B to an A? The extra string tension on other strings won't bother me much (I play 11s and 12s normally) and adjusting to the new scale length shouldn't be too bad either. However, this would require building my own neck, since buying a seven-string neck with 22 frets would be ridiculously expensive at this scale length. I can get a pre-slotted fretboard fairly easily, but no neck... and I'm frankly worried about stability issues with a homemade neck... are they very touchy to make?
-Neck-heaviness: Seven-strings can be notoriously neck-heavy even with extended-horn Superstrat designs. The Explorer design has no upper horn... am I looking at a recipe for guaranteed headstock dive? If so, at least the back point will provide an elbow rest for keeping the neck at a good angle...
-Body Carving: I have a Jackson SLSMG Soloist, which is a very light and comfortable guitar to play, tapering from about 1 3/4" at the middle to around 3/4" at the edges. Would this sort of a carve be dangerous structurally on an Explorer-style body, with the extended points?
-Pickups: I am looking for a versatile seven-string that can do things other than just metal. I'd prefer pickups that clean up nicely in addition to being able to do crunch/metal with some decent definition... the SD JB-7 and Jazz-7 pairing looks very tempting, does anyone have experiences with these?
-Hardware: TOM or flat-mount bridge? How hard is it to make a neck-through guitar with a neck angle? Are there any structural issues related to these?
Thanks for your help, I'm really starting to get into this whole planning thing, and am interested in seeing what others would recommend based on their own experiences.