Getting your hands on the Armor Plated Shotgun is a great upgrade. Adds Def + Stamina etc. It was the BiS before 3.1.
Your rings could use some work as well. I'd recommend running heroics to try to replace some of your blues and greens.
Keystone Great Ring drops from H Drak Keep
Bolstered Legplates drops from H VH
Bracers of the Herald drops from H OK.
Ancient Aligned Girdle drops from H AN
The monarch crab is nice, but also try to get
Essence of Gossamer which also drops from H AN.
Basically run all the heroics till you get what you want! H UP drops that
amazing sword, H CoS drops another great shield etc.
When you get your Emblems of Heroism you should make a couple of purchases. The dodge Trinket is really good and the belt is amazing as well. You should eventually save up emblems for Tier pieces as well.
Not gonna grill you on your spec because you said you'd be changing them soon. With regards to gemming you have some interesting choices. Since you're a JC now +41 stamina is your best friend. Gem it anywhere where a blue slot is not present. Anywhere else +24 stamina is cool.
Another alternative is gemming for hit and threat if you find yourself losing out on threat. going 15/5/51 helps a lot with threat but if you are, try to get at least 8% hit (the cap), and at least 6.5% Expertise to throw dodges out of the table.
Once you get better gear, don't be scared to throw amazing enchants on them. +40 stam on bracers, Accuracy on your weapon (Or tit weapon chain much cheaper). Stamina/Defense on everything.
Hope this helped somewhat!
Edit: The Titanium Guard Neck/Ring pieces are pretty good till you start hitting Naxx. 10man OS, also drops another
great ring.
