I agree on the deadline thing. I'm finishing up rehabbing a Bigfoot truck camper and the joy of the job is inversely proportional to how firm any deadline was.
If I had it to do over, before I started, I would do more consulting the old timers about my plan and how I intended to do it. There's a TON of wisdom, and opinions, lol, on this forum. I really had envisioned doing my rebuild over a couple of years but the Universe had something different in mind. Once I decided to fix some leak issues it snowballed and I ended up doing it in a couple of months.
I did everything by myself and in a do-over I would put energy and focus into finding a way to have occasional help. Visualize big old guy laying in overhead checking the fit of a trim piece almost 8 ft long with one foot holding one end up, one hand on the other and a cordless drill w/ screw on the ready in the other.
There were dozens of times when if I'd just had someone to hold something on the outside/inside of camper while I was on the other that it would have saved me over half the time it took.
Better tools make easier job. A real handy addition for me was the oscillating tool I got. I had a lovely Bosch cordless that got away some how and bought a much cheaper Dremel model but they are really handy.
That's all I can think of this morning. Let your creativity flow and good luck!!!