How low do you want to go? With OBS Escalade a simple drop would be a shackle drop in the rear for 1 or 2"...you can do keys up front for a 1 or 2" drop as well. Simple alignment too as long as all your bushings are in good shape. If you want to go lower than install will take more time because you'll be replacing more parts but alignment shouldn't be any issue.
Cameron