hmmmm Rough Country...
I have ran their stuff, and it is junk.
I have removed their lift kits from vehicles and replaced with quality springs etc. more than once.
I wouldn't put too much stress on the long arms myself, but thats just me.
Any way you could wait and get a IRO or Clayton kit? Be better off in the long run.
Either way, why is 4" not a big enough lift kit? I would go for the 4" and some trimming. What tires are you wanting to run? Regearing the differentials for those tires? Upgrading the differentials? Steering? Brakes? See what I mean?
1998 XJ on 37's.JK Rubi axles with chromo shafts and ctm's, 4:1 transfer case, etc etc etc.The Cherylkee....
2003 Range Rover HSE, 4.4 Quad Cam.
1998 Range Rover 4.6 HSE
2000 4.7 4WD WJ with a rebuilt motor.
4.3/700r4/new frame buildup (YJ)....
Years to gain the hands on experience, and offer it freely.
Minutes to gain the knowledge from the internet, and quote it just as freely.