Eric, I'm close to finishing my field rescue truck. It was in about the same shape as your truck. I've been at mine for a year and 2 months. I'm retired but didn't work on it full time.
I did both electrolysis and blasting. Blasting is faster.
The more you take apart the more rust you will find.
Your budget, time schedule and skill level will determine the direction you take.
Check my progress photos.
