Personally I think enchanting is a must but that is all I would do. You will want to keep enchanting leveled so you can keep disenchanting stuff while you run instances, especially in outland.

The rest of the professions increase so slowly with RAF that they will trail way off, and the time you take to make them go up is time you could be using to get to 70, where you can do 5x dailies to make way more money than professions ever will.