First time noob? Probably not. I'm a noob, but I think that the M4/M16/M15 platform seems a lot safer route since so many people own them, and can repair any possible problem/diagnose them at a moment's notice.
Not to mention: AUG isn't an accessory gun. VERY few things cosmetically can be done to this rifle. Most noob's want a gun they can attach every bloody thing to. Which can be fun, but then can be a hassle when you have to figure why your rifle's off balance because of your M203 and your ANPEQ-2...