Wheel spacer questionable

[fishface]

Hi all, I searched this and didnt find the exact answer I was after so looking for some expertise. I have a Chassisworks subframe to go in a 69 Camaro in the spring. I bought it out if a stalled project and it had the Baer brakes with it. Long story short it will take a 5/16 spacer to keep.the inside spokes from contacting caliper. This is a street only car and I am planning to use 1/2 inch ARP studs. Many have said not to space over 1/4 and wanting to be safe above all else and would go with different brakesif necessary.I cant use adapter type and maintain correct backspacing. Any advice??