Am I Crazy For This Idea?

Re the front brakes, there is a good article by Rick Ehrenberg that has been linked many times. It discusses using FMJ spindles (Aspen) in an A-body. Many have done so. Worst-case, if your UCA's are the small ball joint and you can't find later UCA's or buy the stud adapter cone mentioned, you can buy new tubular UCA's which allow better camber & caster adjustment. Not terribly expensive for the added bling.

Another idea on the rear is to adapt a Ford 8.8" rear-end (Explorer). It requires shortening one side (cutting and welding). You can find posts. Gives a stronger rear-end w/ disk brakes.