Hey Mike- I think that is a very good solution! Did you tap and thread the TS or are you going to use bolts? Maybe weld the bolts on the inside (less pieces to lose when not on the truck.)
How easy (or difficult) is it to get to the bolts to remove and install? It looks as if you do not have fender well liners??? The reason why I ask is: I added liners to my Dodge and it makes access to the fasteners a real PIA because it narrows the space on the inside edge of the leaf spring. This is a main reason why I leave my spacers on full time.