I think it is an enviable place and glad you grabbed it while it was hot!! Welcome to the pro-active side of this place!! [glad you came out of the shadows]
Lots of different ways to do it and none of them is "RIGHT" specifically. Some say get the parents to co-sign, others say make the students stand on their own ... don't deal w/mommy and daddy.
I've heard some places want all checks to arrive at one time together. Actually there is a perk here on BP for a Pay App that lets you assign each of the students an amount and a code and they can go to any 7-11 and for about $4 per transaction they can use cash to pay you and you are alerted right away. I"m not sure what the charge to you is.
Most of these colleges can afford $550-700 or so in rent per room - especially if it is in very close proximity. I have just put an offer in on the same type of house [only it will still need work done] at the university up the road. I'm debating between making the lease one year minus two weeks and charge them a little less that month - so that I can get it cleaned and fi anything that needs it... OR going month to month which makes it easier to evict. I look forward to hearing what others tell you as well!