[1985 CCX]

Racewhere has a set of PSE kidney beans that could be used. Would be very cool. You going six pin or adapters. ??? I might suggest 6 pin as keeps options open in wheels.
Spline are for wires however they do make adapters for pin type wheels to modify onto spline.

I would get optional rear assembly as well.
Outboard brakes and tons of adjustment.