So normally you expect to take it a fair while before your riding around on your sexy mount. Level 30 after all, is a long way away. No longer however. Recruit a friend makes levelling easy, with 3x the experience when you play with your friend. Travelling isnt much of an issue with instant friend to friend summoning, not to mention the free mount you get after your recruited friend pays for their second month of play. The only downside is, the triple XP stops at level 60. But by then your so awesome it doesn't really matter all that much, as helpful as it would be.
All you have to pray for is rested xp breaking, 6x the experience is frankly just awesome. And let me personally reccomend the mage/retro team, because together there really isn't much you can't do.