Hey Devon - sorry to ask a jerk question... but what does "new pistol owner" have to do with this thread at all?
Anyway, you should have been active in 2004 - you could have gotten much, much more into Canada for cheaper (or so I hear, I wasn't around then)! Welcome back though.
Personally, the stubby M4's don't float my boat - but if you like them, go for it. I guess it'd be easier to create a CQB AEG out of an M4-ish-thing, as many more parts are available already in the country, and for much better prices. Happy hunting.