ok, After reviewing all replies, it seems like the choice is definitely to mod the rear quarter, but the replies on how to go about it are mixed. I've been looking at different options, and it seems the best, or easiest option, would be to mod a set of front fenders and shave all door handles. the wheel well "hump" (or flares) on the fenders will be identical to the front fenders because, well, they are from front fenders. not only that, the contour from the new quarter panel setup to the body will be close enough that I wont have to "reinvent the wheel" when matching the quarter to the bumper. If and when this demi-project gets underway, Some of you will not be happy about how this gets accomplished, and this is why: instead of cutting into the existing body of the Tahoe (quarters and rear doors), I plan on trimming the fender flares off of the front fenders and grafting them to the quarters and doors. the template for the door opening will be the same, just about an inch and a half of thickness added. I don't believe this will be too difficult, as I have trimmed, modded, and re-made portions of the front fenders just for clearance and so far, everybody I have mentioned this to wants me to park beside a stock Silverado because they are in disbelief.
Let me know your thoughts!