I agree with the previous posters, but I'd like to touch on something that hasn't been said yet. Prot pally, resto shaman, balance druid provide the best pve synergy. If you can drop the rogue for a warlock you'd have a 5 man that would provide, argueably, the best spell damage synergy that you can get out of a 5 man.

Here's a raid comp link to the proposed party. Raidcomp is a great tool to help plan party and raid buff synergies.