As stated above, you might not need to replace them yet. Try to look down into the caliper and see how much pad material you have left.
Yes, drilled and/or slotted rotors have no real benefit on a street car besides looking cool as hell. So you'll have to decide if its worth the premium over a standard blank rotor. FWIW, i paid quite a bit more for cross-drilled rotors on my BMW 335i and I always look at them longingly after I park. (Also, just to be pedantic, when you said vented, i assume you mean slotted. As in slots that are cut into the surface of the rotor. Vented means they have vanes inside of the rotors that help move air for cooling. Almost all disc brakes are vented.)
Powerstop is a good brand, Stoptech too. I strongly doubt a Ford service center will touch parts that you bring in. Some independent shops might let you bring your own parts, others may not, so you'll just have to call around if you end up farming the job out.