In your shoes, and expansion coming up in less then 3 munths, I woud have taking my time time up to 70.. chiled it.. enjoyed it.. once at 70, i would just have used the blue set and saved all marks for lvl 80. And just played BGs and some arena maninly for practice and fun. But not spend any time on trying to gear up more. Maybe focuse some one geting a nice stack of gold before expansion.. so you can get gems / enchant directly then.. or even use the time to lvlup as much proffesion as neede...

But going for seriusly gearin up is something i see as a totaly wast atm..