I'm still not following what you're trying to state.  S4s come with their own PSUs.  Ordering more of them is completely irrelevant to the ones you currently own.  Do you currently have miners in your possession?  If yes, why are they not pointed at your own pool? 

You may think the questions irrelevant; however, people who might be interested in mining on your pool would certainly think twice about it since the pool's owner/operator/representative doesn't even mine there with his own equipment.  I believe this is what aurel57 is stating.  He's trying to help you out by getting you to clarify some of the statements you previously made to help put people's minds at ease - especially given the nature of the promotion you're offering, since a similar promotion in the past was met with such bad press.