Before you turn the first wrench, you need time, (lots of it) money, (much more than you think) patience (almost as much as Job had) and room. (enough so that you can have several projects going on at the same time) If you don't have organizational skills, think long and hard about taking this on.
Before committing to the tub and the frame, no matter how good of shape you think they're in, expect rust and possibly cracks. CJs had no rust protection whatsoever. What can look like a nice tub when painted (even painted a long time ago) could actually be more rust than steel. I own what is supposed to be an "Arizona Jeep". It's supposed to be rust free. It is now, but it was hardly that when I started. Even though the tub was crispy from a fire, it wasn't until it was media blasted that I knew I had "significant rust issues". And as things like the floor was removed for replacing more rust was found in the supports. If I knew how much rust I actually had in my seemingly rust free tub at the beginning, I may have opted for another Jeep.
CJ frames twist and they crack. That's not the end of the world, but again, before you drop that engine and running gear onto the chassis, I'd make darn sure it was sandblasted before I commit to anything. M.O.R.E. Off Road makes some great stuff for strengthening the frame and a member here, (Jim1611) makes some great shackle hangers www.crabtreetool.com
Examine the frame and repair it before you start hanging stuff on it and then find trouble.
Others will chime in. I don't want to discourage you but rather encourage you to go about it with a LOT of planning and thought involved. There are too many half started projects out there collecting dust and rust in guys' garages because they lost heart.
My project is costing more money than I ever imagined. But I also could've gone cheaper with some of my parts and equipment choices. I chose to buy American whenever I could, but that's just my choice. We all do what we have to do when it comes to stuff like that; I won't criticize financial choices.
Good Luck and keep your sense of humor!
Oh yeah, since you're a new member you're on probation until we vote you in. One of the conditions for new members is to paint their Jeep Pink. (Barbie Pink, actually) It's in the rules somewhere. You could look it up, but trust me, it's in there!