I'm thinking of going with a 2 wide by 7 high installation in a corner of my room.

I'd like to be able to power all tiles with a single 3kW socket, and I think I should be able to get 14 to fit in that power envelope. the space in the corner will allow the installation to be more like a pillar and not something that has to be attached to the wall in some way.

In other news, it doesn't look like the material situation is looking that good, so I'll have to factor in the price of standard rate filament. Maybe silver won't look so bad.