Unfortunately, if you try to get a bunch of people together to rent hash, you'll all be competing with each other on the rental site.  It would be better if you could get a trusted member to run a group rental for you.

Of course, you need to realize that even if you do manage to get five people interested in supporting this pool by throwing 200TH/s at it for 24 hours, you're still not guaranteed a block.  In fact, with 1PH/s, your expected time to block is just over 3 days at current difficulty.  That's a pretty significant risk for most - a cost of about 1.6BTC to get a 1 in 3 chance of finding a block where your maximum possible payout would be 5BTC.

Please don't misunderstand me, I wish OP the best of luck with the pool and hope it finds a block.  Once the pool starts finding blocks, it will start to attract more users (especially if the current users are happy with the pool).