First let me say I' d do a spin test on each one of your bemans. Use a spinning jig, dot mark on a wall to check it, and spin both ends checking for straightness. Discard the ones that aren' t near perfect. I always find 1 or 2 in a dozen that don' t, had they' ll never fly right.
Next I use vanes, nothing against feathers. Both have advantages, its really just a personal perference. I use Duravanes or Easton vanes. Both seem more flexible, and recover better from bending into the target. Start with a 2 degree offset, I prefer right. Check for clearance by using spray powder. If clear ok, try a little more. The more spin you get out of the rest the better.
I stick to easton internal uni nocks. I like these obviously for their adjustability to get fletching clearance. I always have spares, because they can pop out from shock of hitting something harder then foam, like another arrow. I don' t have a clue on uni bushings sizes for ya.
Colors I like white, and a flourescent green for hunting. White helps me to see the arrow against the brown of a deer for shot placement. 3D shooting I use as bright as can, so makes my shafts little easier to find in the forest floor, it happens! Orange, yellow, or white help searching. Nocks I like flourescent green, and yellow for same reason. White' s also good for hunting. Hope this helps!