So no complaints about the Ironman ride so take that for what it is. The best proof is going to have to come from personal experience.
Another question, to get 2.5" out of the Ironman lift do you have to have the rear trim spacers on top of the springs and index the TBs properly? With the OME go with an 860 or 866 spring and properly indexed TBs?
the front end you just need to index properly for the droop. If you want 2.5 lift in the back then i would buy one that is 2.5, not hack your lift to get it.