Do you want the RTT so you can break it down every morning? Is it a leave no trace, don't be seen kinda thing?
If it's possible, I'd probably go with a big tent like this: http://www.standingroomtents.com/. Save the cash to buy a good cot and make a decent little home that you would have some...
You can also go with bag liners like this: http://www.rei.com/product/797114/sea-to-summit-thermolite-reactor-extreme-mummy-bag-liner
I have this one and like it. Also, it's easier to wash the liner than the bag...
This one is only an oven but it smaller than the Camp Chef one. It is also only $70. Combined with my $40 two burner stove, it was much less than the cost of the combo unit.
Not as compact but almost twice the lumens (900) and only $50 shipped. I have one on my bike and it's a pretty sweet deal.
How about adding a couple popup/hybrid style fold down beds?
Something like this: http://cgi.ebay.com/ebaymotors/NEW-8-5X16-3500-TANDEM-ROAD-DOG-CLASSIC-SPORT-CARGO-TRAILER-TENT-BED-TOY-HAULER-/280885873515?pt=Motors_Trailers&hash=item41661a4b6b