With a standard pool, you are going to have to use a VPN service in order to tunnel that traffic where you want. That would be sending encrypted traffic, though. The other option I can think of off the top of my head would be to run a p2pool node but set it up to respond on a port that you ARE permitted access to. This won't help you if they are doing protocol inspection, as it will just drop the traffic as not being "really" Web/whatever traffic. Just the first thing that springs to mind

You've already found BFL, the other major option is getting into one of the Avalon group buy deals, whether you go Klondike boards or something else. There are tons of threads about them in the custom mining hardware subforum. https://bitcointalk.org/index.php?board=76.0

Needs more solar panels You don't specify how cheap your electricity is, but I imagine if this is intended to be a GPU setup it will be expensive! I like the grouped watercooling idea, though.

Link to what WDC is?

~2600MH/s. 4x7950 and 1x6970