Hi MIke,
(1) Angle doesn't matter,as long as they are both the same. Make it long enough to get some glue surface.About eveyyone I know of preglues the lams before the bow glueup. I grind mine ,both at the same time on the disc sander,just hold em together and grind both at once. Then lay a pc of plastic wrap on the edge of a 6' strait bench ,lay lams on topwith glue applied,fold plastic over and clamop with a small block. You can line the lams up along the edge of the bench to keep em strait. I use CA,but smooth on or probably other glues would work. Sorry so long winded!
(2)glue LOL