Hyper-aggressive HU player in 5-10 NL, 5-max

[9cao]

One of, if not the best HU player on the site I play at sits down in my SH 5-10 NL game. After a few orbits I notice that this guy is being crazy aggressive. Almost always raising out of the BB or SB if limped to (often reraising) and opening every pot he plays which is about 2 out of 3. 100% continuation bet frequency. The rest of table now seems to be opening up because of this. My image is fairly tight and I have taken a few pots without showdown.

I have $1200 and table covers. I pick up A [img]/images/graemlins/diamond.gif[/img]5 [img]/images/graemlins/diamond.gif[/img] in the CO. I limp fully expecting a raise from Mr. HU in the BB. Thoughts on the strategy?

SB calls. BB makes it $50. I call, SB calls.

Flop: Pot($150)
2 [img]/images/graemlins/diamond.gif[/img]3 [img]/images/graemlins/club.gif[/img]8 [img]/images/graemlins/spade.gif[/img]

SB checks and BB makes it $75. I make it $300. Standard?