Are you going to buy a home? Some things you will want to consider are:
1. Paying your property tax and insurances in an escrow account. we do that with ours then we don't have that huge bill for property taxes at the end of the year. It was always hard to come up with that, seemed like every year we were borrowing it and paying back a high intrest rate, would just get it paid off and it would be due again. Now that it is in the escrow it is one less worry.
2. Putting back the extra payment once a year, unless you decide to do the bi monthly payment.
3. Get the fixed rate, do not whatever you do, no matter how low it is right now, do not take the flexible rate, it can sky rocket out of control. You really need to think about this one, it could possibly make you loose your home later when the payment goes up and you can no longer afford it.