My Ome's 751 have over 150,000 miles on them supporting a little over 200 pounds pf winch and bumper and a set of dual Yellow Tops, believe me they don't sag.
May really want to look at the qualification of the people that you are asking before you make a decision.
How big a tire are you wanting to step up to and why do you think it will take 3"s to get it done?

 

You guys say "call Tony at RTE Monday". What company is RTE?

 

Tony is not at RTE, Rover Tym Engineering, he is at the LRRF, where is has one of the better on-line prices for OME's.

 

Lrrf appears to be a forum not a retailer... Or am I missing something?

 

http://www.lrrforums.com/store/index.php

LRRF is a forum and also has a online store. LRRF is operated by Cerrone's European. Anthony (Tony) Cerrone runs the business.

 

If you are worried about ride quality I will tell you from 1st hand experience having just installed 2inch spacers a few weeks ago that it is NOT a good idea. Maybe 1inch spacers would be better. I'm getting a full OME set soon.