Four wheel 5 lug disk or 6 lug disk?

[88k5jimmy]

I am currently building a 64 long step bed with GSI front suspension and Porterbuilt rear suspension, full air ride. I will be using CPP stock height 71-72 replacement spindles in the front that require 1.25" thick rotors. I do not have a brake setup in the front but plan on disks and I will be using the factory 12 bolt rear end converted to rear disk. Since I do not have any brake components in the front I can go either 5 lug or 6 lug. I am going to replace the axle shafts in the rear, therefore I do not have to stick to the factory 6 lug pattern. The wheel I eventually will end up using can either be 5 lug or 6 lug, so wheel choice isn't driving the amount of lug studs.

Therefore if I went 5 lug I could use off the self front rotors, calipers, etc and use aftermarket conversion axle shafts in the rear that are 5 lug. I'm sure there are disk conversion kits for the rear or maybe somebody on the board sells the brackets and knows what calipers to use, etc.

If I went 6 lug I would have to buy aftermarket 6 lug rotors but what about calipers, etc? Could I still use off the self calipers? I could use replacement axle shafts for the rear and then a disk conversion kit.

I'd like to use off the shelf parts for the rear conversion because I think it will be cheaper than using a kit.

What are your thoughts?

Thanks