Heads Up SNG Question, Calling range

Been playing quite a bit of Heads Up SNGS (turbos) anything from 11.50 to 57.50(except for when I got hammered and played a $520, thank god I sucked out)
Have been having a ton of success at the lower games playing "physco aggro" raising 4xbb preflop EVERY hand, Cbetting 3/4 pot when the opponent actually calls Every time, anyway, this has shown me that eventually the other guy will either start pushing over the top preflop every few hands out of frustration(I guess) or move in on a flop that looks like it may of missed me when they call and realize they REALLY need to win the pot. When they move in on a ugly flop, I just wait til I hit top pair(sometimes even middle) then I call and they generally have AK, and even if they suckout, it is usually to the point that we are even after the double up.

So my question is what should be my calling range if I raise 4xbb preflop and he goes over the top? Really this is the situation I am going, for, the more times I fold I think their range widens. I have been calling with any ace, and kq, qj. Should I widen that? Should I adjust depending on the blinds, meaning how desperate he maybe? We both know I am just betting constantly to see him fold, and we both know the other knows that, but since he is obviously going to be tighter than me, I think people tend to feel, they can bluff, after they see me lay it down a few times. Just for discussion say he has 750 and I have 2250. I know this is all just opinion, but it would be great to get the thoughts of all of you. Thanks in advance.