Re: I would take another route
Sounds like what you want is a big distributed VPN. Essentially what the internet is already, but fully encrypted.
the i2p project is what I looked into: https://geti2p.net/
Sounds very much like what would be the solution. The only problem is that unless you have a gateway to the wider internet, you are stuck to what services are run on the I2P network. However you (and your mates) can host whatever you want on it, including IM, web, etc... and you go from there.
I might have another look it, however the other problem is if all my traffic becomes encrypted, that will just single me out as someone that the powers should "pay close attention to".
Atm, not sure if wiser to secure yourself, or attempt to get lost in the noise. For now running a yacy search engine spider on my machines. That way the bot is constantly spidering the web so we get an open source P2P search engine that is usable with an up to date index, and my browsing hopefully gets lost in the noise.