This is just my take on it so take my advice with a grain of salt. It seems to me your playing way too tight. You are only playing premium hands from early position and good hands from mid position. D ...
I'd raise to about 250 or so. Right now you have the near nuts and a re-draw to the high nuts. If the guys only has a pair he'll have to drop his hand. You don't want someone with something like 5 6 s ...