There are a few things to add to Danny's list for a DIY job, and I realize he wasn't providing a complete shopping list, but you'll also need spindles and the related parts that don't come in the front kit (thrust washers, spindle nuts, dust caps), brake hoses x4, usually a custom adapter piece for the e-brake cables (we make them in house), 21mm master cylinder and a custom 1" longer push rod OR residual valves for the rear if you try and run the stock Brazil master (it will actually stop the car fine just leaves a very soft pedal feel), e-brake cable need cut to length and new ends swedged on, drum skins to hide the disc brake centers (need trimmed and painted still).
Danny is correct on the axle swap, it's not that big of a deal to do. If you have the ability to press the cast bearing retainer off and on the axle tubes, then you can just swap those (they use the same length tube with a shorter cast end for short axle), so all you need is the cast end and proper length axles, gasket kit and the "know how". There are several things that can be screwed up, but they aren't terribly difficult to get right if you know what you're doing. The fulcrum plates are easy to let drop behind the axle, so you just have to pay attention there, and the paper "gaskets" are actually shims as well, so you need to assemble and check how easily your axle tubes move when torqued (dry) and then add or remove more paper gasket "shims" until you hit the right spot, then disassemble, seal and do final assembly.