Your biggest obstacle is going to be your price point. Because of the type of water that you are going to be fishing you don't need a very long kayak; from 10'-12' is perfect.
Might want to have a look at the FeeFree Moken 10, at $649.00. Getting the non angler model will save you $50. I did a review on the
Moken 10 Angler here.
Also might want to check out BassPro Shops Ascend brand, they are a great value for what your getting.
I've never paddled it but the
Ascend D12 Sit In $579.99 Looks good, the seat is extremely comfortable "I sat in it at the store", it is a sit in so you won't have the room or sitting options of a sit on top but it looks stable enough to stand in.
Or look on Craigs list for a used kayak. Check out this thread about the
short boat trend, it might help you also.
Also Welcome to the YA Nation!