I agree with the others in this thread in that you need to cater to a niche area of the GTA cycling community. Unfortunately, for an area where half of the riding community is only on their bikes for less than 6 months, the crowd buying exotic bikes is extremely small. Likely not large enough to keep you afloat.
First consider your location, then do some more research on what other shops in that area are specializing in. As for high-end stuff, most people favor Riders Choice (west end), or GP Bikes (east end). The only major central dealership would be Kahuna, and they do everything, but mostly Japanese (I think).
What I'm getting at is: consider another angle other than just high-end stuff. Lots of dealerships focus on a certain market, AS WELL as offering high end bikes/parts/support. Racing community support (Riders Choice, GP bikes, Blustreak, Pannon), or you can focus on Touring/commuting accessories (Royal Distributing).
Personally, I wanna see someone defy the "Parts Canada" standard BS catalogue, and start bringing in parts & accessories straight from the manufacturers (and at much better prices). Maybe have an on-line store that offers local pick up, and perhaps a "rare parts" order service, where customers can request something hard to find, and then do a group buy to find other interested people to keep the price(s) reasonable.
The actual name of the place is probably the least most important thing - as long as its easy to remember/lookup/spell and somewhat catchy.