$2000NL - BvB Battle

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This hand takes place in the $2000NLHE event for the WSOP that started yesterday.

The blinds are 300/600/75. First hand after dinner break. I have just over 13k, the SB in this hand has me covered.

Since I am new to the table I don't have many reads on anyone aside from the standard young guy = internet, old guy = nit, middle aged guy = somewhere in between. SB is probably late 20s, doesn't look like he plays too much online but is probably a possibility that he plays a little bit. He's one of the guys with an iPod with HUGE headphones instead of just using the standard iPod headphones, I don't know if that means anything. In my head I figure this type of player is capable of stealing with a wide range of hands here.

I hold A2o in the BB. Folds to SB. He raises to 1800. 3000ish in pot including his raise and my BB.

What's my pushing range here?