Since you didn't clarify if this was going to be used as a defensive weapon or plinking. I'd say buy the basic model and build to your budget. The furnitures for stock are more than fine for that "Bad *****" look, (sorry but Bad ***** has a different look to so many people). Want one that just looks Tactical or functions, or both... the sky is the limit..

The MOE version is a great rifle but it doesn't add to the rifle as far as function, more for a little more solid in design. You are doing good in asking, but keep on looking at different M&P 15/22 photo's for the look you want, and build according.

Also before you start your upgrade, know what range you plan to shoot, what kind of shooting you plan on doing and this will help you dictate what build you will go with, exp. tactical shooting, hunting, targeting and/or just plinking. As far as optics, exp. Red Dot, Scope or just plain iron sights.

PS: Welcome to the M&P family....