Excelent idea, I've been waiting for this for a long time. With the Hagen mod. incorporated it's all the better. I have the 3 inch Calmini kit and an extra 2 inches I could finally clear 33's. The rear would be a no brainer you could add adjustable coil spring spacers and adj. your ride height to your own specs. On the front I would try to box the whole lowering mounts to help strenghten them out. You could also cut out the stock crossmember between the mounts and drop the diff. as much as nessary. On the steering issue if you flip your tie rods to the top instead of the bottom I bet a 2 inch drop would be perfect, and they make a reamer tool to do just this. I would be very interrested in this sign me up.
Kevin