You'll need to find out a few things.
Is there a dumping station anywhere near you (for emptying the...you know)
Is there a campground you could stay at (monthly rental usually cheap)
If there's a campground, do they have electric hookups
If there's not a campground, where do you plan to squat, or are you going to try to move from place to place?
I'm not certain about the campgrounds thing, but I think
www.woodalls.com should be able to help you in that area or link you to more info somewhere.
I too have contemplated doing this, but only after the kids get done with high school. I wouldn't recommend going the "squat here for the night" route, because if you get booted, the looking for a place late at night to park your rig could start really messing with you.
Make CERTAIN the thing doesn't have an old moldy stink to it. You WILL NOT be able to entirely remove it, and you will start to take on the smell yourself. The refrigerator on those things DOES come out, and if you ever have a problem with 'em, I've got a much-more-aged-than-I buddy who used to sell RV's, and now only does repairs, lives less than a mile from me. I do computer work for him, and I'm positive he could answer repair questions if you've got 'em (although he's old and cranky

)
For yourself, you'll be fine in that size, in fact, you MIGHT want to see if you can get a tow-behind (fifth wheel is what you'll be looking for), and hook it up to the Suburban.