Just curious, you guys saying you have a large mining farm at the moment, generating a good revenue.

Can you please post public eth address and which pool are you using to see your Hashrate and revenue ?
If you going public, doing mining farm backed ICO, than this is first thing you should share and its not a secret.

Something like this:
https://eth.nanopool.org/account/0x937160602a3abf51fb5e9f58417727d18537c67d
http://ethpool.org/miners/778ba346be061905a4e5baf658d28cc8bf2db717/blocks

This shows their hashrate and approximate Revenues! Its public. And Its Large, maybe even Mega Mining farm. There is lot like this out there.