I honestly don't see what the issue is. I installed mine by myself (2 door) in about 3-4 hours. Hardest part was either the weight(!) or the fact that my painter painted the inside of the holes that attatch to frame (bed liner). Didn't notice untill almost done, had to pull down and auger the holes out a bit. Everything lines up nice. Nut certs are not that big of deal really...just use a snug pressure. Too hard and they pull/strip out, too soft and they spin. Any doubt, go soft and check, tighten as needed. I have used nut certs in avaition many times, so maybe this helps.
If u can do a lift, this is nothing...really.
2010 JK. Rubicon Express 3.5" superflex, 35" BFG KM2s on Mickey Thompson Sidebiters, Poison Spyder Rocker Knockers, Poison Spyder rear Rockbrawler II bumper, Poison Spyder front Rockbrawler bumper with Warn M8000-S, AEV Snorkel, Spartan front locker.