Is the discounted rate good for the life of your loan? Yes (some common assumptions made).
Is the up front spending on those points justified? That may be a decision that needs more calculation for your unique situation. Look up Rob Weber (lender) here on Trulia and see if you can't ask him for advice on the right fit for your plans.
He may want to know how long you plan to be in your current home, what the total cost amounts to, etc... his link below...