If you check your brake pads, you will see that with wear- especially at 60,000 miles, the fluid is a little low due to the calipers adjusting out to compensate. Unless it is below the add mark, I wouldnt mess with it. Instead of adding fluid if it is below the add mark, flush you brake lines with new fluid. It is routine maintenance anyways. Cost is $5.00 fluid, 1/2 hour of yours and a friend's time(to pump the brake pedal). The rest of the stuff is at your discretion as to whether you have the tools and such for the work. The F&R diffs are pretty easy as is the transfer case. PCV a child could do, and the Tranny sounds like you should pay someone to do as it does require a gasket, filter, and a few other skills to do successfully. If you save on everything else, the tranny cost wont be too bad. Also figure how much warranty you have if any on the VX since it is easier to get warranty work done from a dealership if they rip you off for service from time to time! LOL but true!