Tailoring and Enchanting don't really provide much cash flow, even after you max them out. If you have good enchants and patterns, you can spam trade, but I don't enjoy that. Dailies are your best bet. The ahune quest, while it is going on, random heroic, weekly raids, argent tournament dailies, especially once you're a champion, and anything quick like the fishing/cooking dailies. The dailies for grinding rep with the Hodir faction and the Oracle/Frenzyheart factions too. Just sell everything and anything that you acquire while you do them. I usually acquire a bunch of greens/blues/purples from running heroics, and I will sell stacks of dreamshards/dust and what not on the AH. It doesn't take long to rack up 60 triumph emblems, and then you could buy the boe valor wrist items and sell them on the AH. Or once you have 23 frost emblems, buy primordial saronite and sell it on the AH. Or you could get an addon like Auctioneer, since you have 5k gold to start with, and buy low/sell high. I've never tried, but people rack up the gold that way.