Really would love input from you guys, drying in Shed in woods

Hey guys, I will be drying out in the woods as my options are scarce. Dont stop reading just yet!

I am planning on building a temporary Drying house, room whatever you want to call it.

It will be made of 2x4 and plywood, water-proofed of course, and then wrapped in tarp, and spray painted to blend in quite well.

I did a small drying test to see exactly how it would be if nothing was done to to drying atmosphere, and lets say it was catastrophic!

Now here is the part i would like your opinions and maybe even some help.

I am planning on getting a generator to put out there between 1000w to 2000w. But i do have a small problem

The generators will run between 5 to 8 hours on Half load. This is too short of a time gap for me as i cant just keep going back that often. Has anyone had experience
expanding the gas tank with maybe a external tank? The generator will power a Small AC cooler, a rapid acting dehumidifer, and some small fans.

I would REALLY appreciate all your thoughts and opinions!

Thanks dude, and actually that will definetly reduce my scare on a fire starting