As far as shooting and flinching, thats not a problem. I have ALLOT of experience shooting high powered rifles in competition up to and including 50BMG.
As far as the shotgun goes, i bought it intentionally as a defense type (that will be this shotguns primary function). I figured if the 18.5" barrel didnt hack it then i would get a rifled slug barrel. Anyways thanks for the advise guys, i understand that this set up is not the optimum, but its just how i operate sometimes:D