As for gems... I went all AP & Crit, with 1 Hit Rating gem. I replaced all of my Str related gems. My Armory profile hasn't updated since 10/16, which was before I made these changes so they are not yet reflected online.
I wanted to use as few hit gems as possible so I figured out how to do my gear and enchants in such a way that I only needed 1
I then used as honor points and DKP to pick up the following:
1 x Bold Ornate Ruby - Honor Points
1 x Gleaming Orante Dawnstone - Honor Points
1 x Smooth Ornate Dawnstone - Honor Points
1 x Rigid Lionseye - DKP
1 x Gleaming Lionseye - DKP
1 x Bright Crimson Spinel - DKP
The three red gems went into my helm, the Grimgrin Faceguard, where I skipped the socket bonus to stack AP. Then all of the yellow gems went 1 each into my chest, gloves, belt, and legs to get the socket bonus on each of those.
It was a nice upgrade across the board. If you don't have enough Honor Points or access to gems through your guild bank you should check the AH. Prices are dropping on everything right now and you can probably pick up some rare-quality gems on the cheap.