Nice - I'd probably buy one of these. I'm crap at sums - what would each type of shirt ultimately cost per shirt, roughly? Would the tee-shirts be embroidered as well or just printed? If we all have to agree on the same colour, I reckon it's going to have to be black; or could we order X black, X blue, X red etc?
The design is very cool. I'd definitely keep it a small logo over the breast rather than a big in-yer-face splash over the front or back.