Yeah, thats a bunch of work in front of you. It can be done. The real issue is that you can't see yet what you are really up against.
Don't forget the inside of any box sections.
One thing is for sure, you will break off a bunch of bolts and nuts if you don't wire brush the threads and use endless amounts of WD-40 or PB blaster.
When I used to restore classic Mustangs, on more than one occasion we sent out a car to be dipped, and it came back in multiple pieces.
Rust sucks, it is absolutely the worst thing to deal with in any restoration. It takes time, patience, and lots of $$.