As for goldfarming:

I usally clear karazhan each week and oftwen ZA once or twice each week. This leaves me with about 200 badges each week that I dont need. In other words I can buy epic gems for them and sell for maybe 3-4k gold each week

Raiding is fun, but remember to respec ToW when you do. Things go extremly much faster and easyer when you do. With your gear its not really needed for karazhan I think, but will save you tons of time.
If you are going in ZA, you will need ToW to have high enough dps/mana efficiency. The 500g respec to ToW and back to NS is totally worth it if you are going to do some raid instance farming.

Anther bonus of raiding:

The dps trinket from Hex Lord in ZA is insanely good for multiboxing shammys in Arena. I am clearing ZA hoping to get it on every toon. So far I have taken hexlord about 7-8 times but no luck yet. (about 11% droprate) However I've gotten 4x of the Voodoo gnomes trinkets :P