Wow, you blew $4500 just setting up the room! Kind of defeats the purpose of mining. It's hard enough to make a profit without piling another $4500 on top of that!
Hosting would have been anywhere from $1,100-1,300 per month, per person when we only had 15-20 miners. With what we have now, we will hit full ROI in another 2 months or so, maybe less with the spike in price... Pretty easy decision in my mind, and I didn't have an issue putting my money to that.
Trust me, we weighed every option we could, and this was the best option, hands down!