Both can impact your leveling speed pretty dramatically. Heirlooms and Moun, that is. There really isnt a rush at the moment though. Everything at max lvl isnt done with any fervor since the expansion is soon to be released. You can also buy a fuck ton of heirlooms in UC in the rogue quarter.
I think people are selling tokens on the AH for gold, so there is always that option. Buy one, sell it, buy what you need. Without asking for any help that is. Most people that have played for a while have gold for days though. Im not one, but yea... haha