You are to Glenside what Kevin Smith is to Red Bank, NJ.
Seriously though, I think that would be a great idea. It would be like a Mecca for NG artists. I was looking for a reason to visit the Philly area anyways and that would be the deal breaker for sure - since, as you said, you wouldn't want people hanging 'round the office too much.
Office rent down here in WV is at least than half what it is there though... I've recently toyed with the idea with opening a production studio, but there's just no guarantees things will work out, and after crunching the number much the way you did, it just seem probable. One of these days though.
Mad-Mardigan
Travel about 150-200 miles to visit a store about a web site and travel back the same day?!?!?!
COOL BEANS