In reply to Traveller:
You might find some of the VS's and HVS's at fairhead a bit adventurous. Some of them have a quite "big crag" feel to them. Whilst the ones suggested are all good routes (some of them brilliant), you will hear a lot of people telling you that Fairhead doesn't really start properly until E2. That is just because E2 is the first magic grade at fairhead. By that i mean that when you can climb E2, the door opens to a seemingly infinite supply of mega classics that will change your outlook on climbing and probably your outlook on life as well. The next magic grade at Fairhead is E4 because that opens up the next level of super classics.
That's not to say the VS's and HVS's aren't worthwhile, they are. You just won't quite be getting the best of the area. A bit like going to Buoux when you can only climb 5+. There's a few good routes, but you'd enjoy it a lot more if you could climb 6b (then more again if you could climb 7a).
If you are coming for a week, i'd suggest a dual location holiday - start in the Mournes and finish at Fairhead, or vice versa. The Mournes has a lot of wee crackers around VS/HVS.