Sounds like you have pretty much ruled out the 3000 due to weight and expense, and with 1 2000 you may just barley squeak by at sea level possibly more so if you installed a hard start kit on the a/c but that 2000 will be working hard and there wont be much to spare once the a/c is running. If you go with 2 2000's you will probably spend around $2000 including parallel kit. You would have the luxury of having a back-up gen. but your fuel burn rate will be significantly higher, twice the maintenance, moving two generators around or twice the amount of locks security chains or metal security boxes which all relates to more $$, also having to carry/store more fuel or be siphoning out of the truck tank as needed. Don't get me wrong I think it's great to have a twin or back-up, got two myself allready and working on a third. I believe you should give some thought about the yamaha 2400is, I believe it has a surge to 2800, I have seen them priced at $1139.00. A great many people believe their honda's equal or very nearly so. I would recommend the 2400is, soft start kit for your a/c (just cause it wont hurt to have it) and then think about getting the tri fuel kit for the 2400is. Also know that if you wanted the luxury of a back-up gen you can parallel two 2400is's and they weigh 70lb's each.