hey there, i hav a lvl 22 tank, and also a lvl 36 healer. my advice would be to wait an see how things develop for your toon. lvl 13 is still very low; so got time to re-modfiy for toon later. also can w8 for the dust to settle and let the 'big boys' come up with a few guides. ED has been a major change, and i'm sure that lots of old guides u read now will not be applicable.
I did my 1st re-spec at lvl 25 for my healer; and by lvl 36; i am goign to need another one.
As for my fire/stone tank - i am goign to play around with him a bit before re-specing
hav fun