I have to say, I've been Enhancement for a while and it's extremely fun to play in Outland; however, I have played Elemental and am currently leveling a second Shaman just to be Elemental. If you do want to switch to Elemental, Outland is a great time. It introduces a lot of caster mail very early in the questing string (on my Enh shammy I had a full off-spec set, just in case, by the time I hit 61). Truthfully, and I haven't yet leveled FULLY through Outland, I really think that each spec will be as quick as you want it to be as long as you enjoy the style of play.
Also, as to your spec, you MAY want to go 44 in Enh to get what you have now AND Mental Quickness. Furthermore, I would suggest the traditional style of Enh/Resto for leveling...less expensive healing spells and totems are always a plus.
BTW, Might I ask what your usual combat routine is?
Edit: Sorry, more specific, put the three unknown points in Mental Quickness.
Edited, Feb 29th 2008 2:26am by OverlordNaes