IFS lift will hold up just fine, as long as you understand that you can't hit boulders stumps and logs at high speed. I have been running an IFS lift on my '90 since '94, wheeled it weekly/monthly for 13yrs before building my '91 for the trail. The only components I have worn prematurely with my '90 are the idler arms, the ball joints have held up just fine, I have only had to replace them twice since I bought the truck new and it now has just over 195K miles on it.
The ball-joint spacers and 3"longer shackles(1.5") lift work pretty well, but you will have to realign the truck after the ball-joint spacers, so you need to factor that cost into your budget as well, also it is recommended to replace the ball-joints if they aren't new. A ball-joint spacer lift w/ rear shackles will run you about $400(new upper and lower ball joints, 1.5" spacers, 3" shackles, front end alignment), plus more if you don't have the tools on hand to do the work yourself.
Body lifts aren't as bad as some people make them out to be. A 2" or less lift is easy to install, and easy to raise the the bumpers to keep it looking original. A 2" BL should run you between $100-150, you can get everything you need from
4crawler.com body lifts.
With clearing 33's now, and what your use/planned use is, I would go with a 2" BL and adjust the sheetmetal where needed to clear 35's.
