If you can get a lift for that cheap then it might be worth it. There are a fair number of people running 35s with IFS. The only reasons I don't run 35s (other than money) are because I don't want to be too tippy and I don't want to break CVs, especially now that I'm locked front and rear.
Check these guys out, they all have IFS, 33s, dual tcases and can run some of the hardest trails in the country short of the hammers. Actually, SteveS and BruceTS are running 35s on slightly lifted 3rd gen 4runners and did run the easier trails of the hammers:
http://www.yotatech.com/showthread.php?t=41255http://www.4x4wire.com/toyota/hottoy/west/http://fastq.com/~sschaefer/4runner.html
