Absolutely choose the van. No vehicle is a no go. I'm assuming you're living in America, right?
If you need a mailing address, get a PO Box, a small PO box can accept basically all flat mail, you just need to check it on the regular, and costs like $100/year. If you have a friend or relative who is willing, you can also use their address as a mailing address for packages, but I wouldn't trust them niggas with your paycheque, it's $8/mo for peace of mind, it's a better investment than Netflix.
Plus van living can be fun. If you are handy, you can trick yours out and make it dope.
https://www.reddit.com/r/vandwellers/