Do you have a PO box?
Use my grandparents house for mail.
This is pretty sweet. I could see wanting to attempt this myself if/when job/apartment situations went bad. 
How tall are you? and or how long is the bed?
How long can you use a TV/console at night (if not on external power)?
I'm 6'2, the bed is a little shorter so I angle across it.
The power in the van is supplied by two RV deep cycle batteries (I have about three times the storage capacity of commercial RVs) and a 1500 watt inverter. The solar panels and the alternator charge them when driving or parked somewhere. I can use the TV/Console for a few hours at night if I want to, but it does use more power than the panels put in, so I try not to use it all the time. But watching some free TV is awesome, and I can hook the laptop up to it.
Backlash, you'd be surprised that a car battery can let you watch a 26" crt tv(if that's all your doing with the battery at one time).
Might i recommend aircrack-ng. Aside from the point that you can use it to crack wep and if you have a good dictionary then wpa/wpa2 non enterprise. You can use the program to put your wireless card into monitor mode which will show you absolutely everything about wireless going through the air at your given location.
You'll see hidden networks, ssid's, people connected to said networks, what kind of security is used. I'm not advocating cracking someones wireless security. I'm advocating knowing a little more about the wireless networks you connect too, and the hidden ones you may not know about that don't use security.
I looked into it, and besides the legality issues (I don't have any qualms using an unsecured connection but actively cracking one is a bit more than that) aircrack doesn't support the card in my laptop or my external USB one
