When you glue up the body wings I'd like to see pics; I imagine it may be tricky getting even pressure against the odd(compared w/a square piece of wood- not a jab at your design

)shapes of the horns,etc. Also possibly dodgy

will be the tendancy of the pieces to shift around(up/down & for/aft relative to the neck/center)as you apply clamping pressure. I'm recalling gluing the fingerboard onto an EUB neck; after ruining one,

on the neext attemp(still not done)I drove short brads into the neck face, ground the exposed ends to a point & then carefully dry-clamped the fingerboard in place. After that, the pins aligned the two pieces perfecty- no lateral/fore-aft slippage.
I'm interested in how you'll approach this potential issue.
Nice work!