Do you have any other plans for it? What gears do you have? Sometimes that's an easier upgrade than a cam, and usually will feel a bit peppier in town. With any cam it will need a tune to run at optimum, but for what you're looking at, no other changes to drivetrain, etc., stay under 210º@.050". TBI heads need a bit of work in order to breathe up top, so it won't do much good to get more aggressive on timing.