I'm currently running the OME HD on a 2 door and did get well over the advertised lift (bonus in my eyes until it gets weighed down with the rest of the junk).

I can't speak for others experience, but as having actually wheeled mine pretty hard...I've had zero issues. I did NOT get any additional parts, I did move the rear sway bar links up front, but haven't put rears in as they contact the tires without spacers. I do not have extended brake lines and yes, the shocks can and do act as a droop stop.

Suggestions for you based on MY experience running the lift:

Spacers for your tires (or wheels with proper backspacing) so you can put rear sway bar links on.

If you are running the longer travelling shocks (might have missed it), you need to address your bump stops to stop your shocks from bottoming out (definitely not a good thing).

Those would be my only MUST need items.

Recommend you get either extended brake lines or brackets (brackets being cheap and easy).

Everything else everyone mentioned are good to have, but not required to get out there and wheel (and wheel safely). I've been keeping a close eye on everything down there (especially my drive shafts) and so far so good. Oh, and I did order this from Northridge 4x4 and spoke with Dave directly.

As for time, took me a few hours (make sure you have all the requisite wrench/sockets sizes). I honestly think this would be a good project to knock out DIY style, but definitely understand the cold issue. If you do decide to go the DIY route, be prepared for getting that stupid PITA track bar back in place. I think I was making up new swears on the spot!

Either way, enjoy your new lift and have fun wheeling!!