This sounds like an amazing idea, going to be following all this very closely.

I l8ke the idea of slapping it on a pickup and just rolling up somewhere, but we'd need plenty of co-operation from the legendary northern weather...

I'll let you know how plans for a backpack style arena go, that's my plan so I can transport it on the bike while I've no car still, be an interesting challenge making it decently sized but still portable.