Hydroseeding Help

OK! i have just put in an order for a hydroseeder and already I am feeling uneasy about it. From what i have seen there are two types some that work great and the ones that suck. Hopefully ther is some market in this area. What would anyone reccommend as in promotion, ads and the like. i am a sole worker with about 18 res. and two apartments cmplxs. This is hopefully some thig less labor intensive, and profitable. I hope i have not made a huge mistake. Any confidence builders out there? Thanks 1st thread