First, a big thanks to all of you for the feedback. I will leave the awning on for a season and then reconsider the pluses and minuses. I really want to stay cool and dry, and I'm hoping that my tiny awning will help in both regards.
I'm trying to stay within AS's GVWR of 3,500 lbs. Our trailer is listed at 3,117 lbs. dry with no dealer-installed options. We have several options installed on the trailer. I'm just not exactly sure which of these options were "dealer-installed" so I don't know what additional weight I need to factor in. Unfortunately I haven't yet weighed the trailer to see what our real dry weight is. I plan to do that in the next week or two. Then I'll have some solid data.
Nevertheless, I have a maximum cargo carrying capacity of 383 lbs. with NO liquids. Add propane and enough water to flush the toilet a few times plus the weight of the dealer-installed options, and I won't have the capacity to carry much - certainly not a generator, a big cooler filled with ice, food and beer, etc.. Our TV (a 2005 Toyota Sienna) has almost no cargo capacity left either, so I can't afford to shift any weight to it. I know that a beefier TV needs to be in our future, but I'm just not sure that will happen quickly. Also, I really like the idea of keeping the Bambi ready to roll - all packed up with our normal gear so that I can just hook up on a whim, and hit the road.
As suggested I think the key for me is to run with minimal fluids. I'll investigate the air mattress suggestions too. I've already gotten about as minimal as I think I can get for cooking/eating supplies. I'll also have to make sure not to carry any frivolous junk. So far I've been considering weight on all of my trailer's equipment purchase decisions. I'm trying to take a lightweight backpacker's approach to Airstreaming.
I wish my trailer had a GVWR of 4,300 Lbs.! That would solve this problem. I wonder what AS did to increase the GVWR by 800 Lbs. What would I need to do to beef up my trailer to safely mimic AS's 4,300 lb. build?