I like the sound of your setup and it seems really efficient! Esp. since I have a high idle setting on my DP Tuner chip. But I don't want to carry 2 different types of fuel, and I don't have the space for a diesel generator. With the increasing efficiency and durability of solar panels, I am going to take full advantage of the sun. My panels are not going to be permanently fixed like most peoples, I will be able to park in the shade and simple run my extension chord out into the sun to achieve maximum absorption. http://www.zampsolar.com/ This place has a nice portable kit with quick connects with a reasonable price.
Right now I am running dual Diehard Platinum Deep cycle batteries with 933cca. I have been running them for about 10 months now. Very impressed to say the least. I am going to stick with having 2 different charging systems for now. I need to make use of that nice skid-plate space. Now with UJOR's OBA kit, I no longer need to mount my compressor back there.