Yeah, get the whole set. Off the top of my head, I know you need:
T60, T55, T50. I've used those recently. I bought an 8 piece socket set and also have a "torx key" for those smaller torx bits. Spend the $ and get sockets with a lifetime warranty so that when (not if) you round one off, you can get a free replacement. Then, when you finally get the torx bolt out, replace it with a hex drive bolt. You'll thank yourself later.
Corey