to answer your questions, the AK is both heavier and longer (by about 8-10 cm if i remember correctly), now im a pretty tall guy so either is okay. dont really care for stanag mags, in terms of battery the AK uses a stick type housed under the receiver cover and gas tube, while the G36 uses a mini type under the barrel hidden inside the handguard.
The gun doesn't really affect my other gear/kit as i'm not going for any particular theme, and plan on having assault rifle mag pouches on a load bearing vest or a plate carrier, and having a dump pouch on my belt.

and yes, i have already gone to the Toronto Airsoft store a couple times and plan to go again in the next two weeks, will definitely take that opportunity to try out both styles of guns if they have them.

I would save and buy both. Someones gun always goes down at a game and a back up is always usefull. Plus more airsoft guns = more fun!

unfortunately i am already buying a sniper rifle on top of my assault rifle, kinda breakin the bank here for a university student who just paid for books and tuition XD.

any more advice or suggestions?

Sniper rifles cost a fortune to upgrade and they are not as fun as you think. I've been at this since May I believe and picked up so far;
Ares M4 AEG
VFC Scar-H AEG
VFC G36KV GBBR
Javelin M24 Bolt
KWA MK23 GBBP
KWA USP Tact GBBP

Cost me a fortune but I'll tell you the sniper rifle is the least useful but luckily I didn't pay much for it. Sniper rifles are hella expensive to upgrade and will require you to carry a side arm unless you want to carry your full size AEG rifle as that....
The extra money is better used to buy extra mags, batteries, a smarter charger and upgrades you may want.

the sniper i am getting is already pre-upgraded, i dont plan on having to up the power any more, i just need to get a 40$ tightbore for it and i should be good up to about 250 to 300 ft, as for a sniper sidearm, i really havent thought about getting one yet, if i do, itll probably be a gbb mk23 or a MP7, but at this point if i'm rolling sniper, i will have the assault rifle on my back, and i'll ditch my usual leg-holster and pistol setup.

300 feet is pretty good.

hey guys, need your help again, I have been led by some to believe that the JG MK36K has a plastic hopup chamber, can somebody confirm or disprove this? or do the old ones have a plastic hopup and the new ones have metal?
i know the cyma AK has a metal hopup chamber for sure

another nooby question, but how much does the material of the hopup chamber matter in terms of reliability? I have seen a few cracked or ruptured hopup chambers, but most seems to be due to abuse rather than design. (or i could be very, very wrong lol)
I like the G36 and AK in real life because of their bulletproof reliability, and that's not about to change in airsoft :)