I would find out what the house rents out for, and make a determination if it's worth keeping or not from that and the estimated maintenance costs you think you'll need on it). I dunno much about the renting for free option, but I'd imagine that would be a rather small subset of people on Craigslist.
Then, I'd max 401k contributions(but aim to max over the course of the year), accumulate ~5k in cash and keep it as cash/invest(however you want to play, consider this your emergency fund[adjust your emergency fund as necessary]), make sure to fund the 5.5k for your ROTH IRA for this year[deadline Apr '14), and possibly sell the van as you no longer need it and do not know when you will need it.