Make do, and level all your crafts together - the class quests reward all the gear you will need to get to L60. And remember that while leves pay double for HQ, they still do pay nicely for NQ. Class quests may require HQ, tho, and may require you to actually make it, not buy it.

As to rotations: L50 rotations they will work fine until you hit L53.
At L53 you get Precise Touch, which is a game-changer.
Check out Jade Nephrite's blog entries, there's a lot of good stuff.