When you do start doing some upgrades check out this thread if you haven't seen it yet. It helped me out a ton and still does. Best post ever man!
http://www.airsoftcanada.com/showthread.php?t=2697

If you were getting a drop-in mechbox, I would highly recommend a lonex drop in. All the reviews on it have been fantastic, great performance and easier to work on due to the high QC and attention to detail lonex has. Honestly, I love my Sentry. It looks and feels awesome, and if you threw in a lonex drop-in it would not fail you anytime soon. Of course, it'd be expensive to do that, and I sided against the lonex drop-in due to the total cost.

I would say unless you were going to get a drop in mechbox, either find a gun doc or if you want to be forced into working on an AEG and it being un-operational for awhile due to it failing, don't get the G&P. At least with the CA it'll hold it's own for awhile.

It's funny, most people say that the gears fail first on G&P's, but for me it was my motor pinion gear, shredded apart.

just saying, you may want to change your location, Canada, to something more precise, it is too broad and may help with us getting you a recommended Age verifer, and lastly, do not get a G&P, get something like a King Arms m4, popular for being a rifle shooting right out of the box, airsoft is a very money heavy sport.