The other thing is are 3/4(20) and 1 ton (30) vans that much heavier than 1/2 tons?

i've been looking at some specs and it seems they all weight about the same?

What about astros?

It would be nice to have alot of extra space, but essentially i just need a place to sleep.

The reason why i'm not looking at any front-drivers is due to the simplicity/ease of maintenance needs.