As far as airstreams, I was thinking get a 70s era (seems to have bigger windows), gut and restore:
http://www.desiretoinspire.net/blog/201 ... reams.html
...
Assuming you're not in CA or another hugely expensive area, why pay monthly rent on your RV at all?
I'd hate to be paying $50-$300 a month just for a place to park and hookup... In my area, I can buy a lot after the house is burned down (has hookups) for perhaps $5-10k. And I wouldn't consider my area cheap.