Without the context of your league (how many teams, etc) to know how deep it goes, it is hard to say for sure. I've seen leagues where this would be a dominant staff, and other leagues where it would be considered weak.
Garcia and Halliday should be solid and very good for you; IF Prior comes back healthy, you should be all right.
Do you have excess offense that you are able to trade?
There's a madness to my methods...