C20 Suspension / Brake Upgrades

[Raszaron]

Truck: 1964 Chevrolet C20 (350 V8, 4spd on the floor, 4.11 rear?, no power steering/brakes or AC!)

I am looking to upgrade my suspension to disc brakes all around and add a master cylinder, and I have found a kit for 8-lug fronts, however, I would like to upgrade to 5-lug front and rear disc plus a mild lowering of the truck with drop spindles (front) and blocks/springs (rear).

I am on a budget (and don't really have the option to blow through it at this time).

These are the priorities for the truck:
1. finishing work on cab supports and relocate gas tank outside of the cab. Fabricate a harness bar in this location with harnesses
2. front/rear disc brakes with upgraded master cylinder (and do suspension at the same time)
3. Install Retro-style EFI system (already have this)
4. Find a used T5 and rear axle for better highway suitability
5. Scruff up primer and spray with clear (looking for the old patina style hotrod truck)
6. Install AC system!

Use for the truck; a nice cruiser to take to local car shows that will do some trips to Lowes for a few bags of mulch or a box to big for our SUV. Nothing daunting as I have a car that is meant for the track and a SUV for the family.

Any advice or links to advice for a C20 is greatly appreciated as I've been reading for quite awhile now and I am finding to much conflicting thoughts.