I understand how you feel, I have had mine for about 5 months, working one day a week with no seat time since I bought it.
It is sitting at my brothers, and each weekend I would go up and work on something from morning until night. I probably replaced a few things that were fine as-is, but I wanted the truck to be flawless (well as flawless as an M35A2 can be anyway). Then each weekend that I thought I was close to driving it, I would discover an issue. One of the bearing races had a mark on it, so I had to order a bearing set before putting that side back together. Then when bleeding the brakes, one of the Air Pack's seals was bad, so I had to order more parts before I could drive it. Then when changing all the fluids everything looked great, like the truck had been serviced right before I bought it from GL. Then I drained the T-case and the oil was not new and there was a modern art sculpture on the end of my drain plug. cleaned it off and it turned out to be a bearing cage. The bearing was still intact but the spacer had come apart and I knew the bearing was living on borrowed time. That let the air out of my sails. I had been pushed out week after week repairing small things, spending money to put new lenses on the turn signals, new mirrors and other items that would have been fine, but I had some extra money so I replaced them for my new toy, before finding out I had some expensive parts that I had to replace, and I had spent my money on bells and whistles.
I finally just had to drive it. I had a rebuilt T-case shipped to me and decided to risk the bearing falling apart in the T-case that was in my truck, so I drove it 5-7 miles just to get some seat time and had a blast. The brakes that I had worked so hard to restore, were like new. The engine was smooth, my new lights and signals all worked perfectly. My mirrors were great and allowed me to see much better then the ones that had lost half of their silver backing. I had bought a couple of Gens from GL, so my brother loaded them in the back of the truck, I put my cargo cover on that I had bought earlier and I drove it a little and parked it once again. All in all a good day.
I still have to install the rebuilt T-case, but the seat time really helped motivate me. This is my first military truck, and I had a blast.
Make a list, place the items that must be fixed for you to drive it at the top, and knock them down one at a time. Fix the other things while you are waiting on parts or rebuilding your parts fund. Heck, I remember one weekend that I spent a few hours just rolling around under the truck looking at how things are set up and cleaning off and re-greasing zerts.
I type slow, looks like you already created a list. You may also want to knock out some of the quick items that are more labor then parts, to feel good about making progress.
