The biggest part of grinding can be removed by using the "Marks of Fate". You can skip most of Asee and Coba with them and then gather some again for Kira/IOR.
If you don't have enough XP, maybe look for some forgotten quests, spam the instances with mercs or ask for someone to help with group quests : you won't get xp for the kill, but returning the quest does help.
Also the 59 to 60 grind was only for people who already were 55 at the time of patch. I leveled 2 reincs below 55 to 60 after it without any grind at all, so don't be afraid of it

And as others said, goblinball for xp buffs is always an option since you need no gear for it.
Good luck, keep up and join us soon in 65. It's totally worth it !