I suggest going into the fairy pit carefully (and I mean don't even breath at a direction of a lordelancer or its gonna roast you) by the red wisps spawn or by the darkshadow NPC quest givers. Go ahead by yourself or a lot better with about 2-3 other people to clear it out safely and without worrying about wandering faeries getting aggro towards you.
After that level on blue wisps (think its around 65 at this point) then white wisps (69-71 or something) or unicorns (73+ don't mess with the roaming red ones). But if you wanna go easy then around the 70s go farm pirates at fingals cave, they're around 75-77 but farely low on health and can one shot most with a good skill rotation (I use shatter 27/20, rupture 20/20 and giant swing, if you don't have shatter I suggest you find someone who has a spell tome).
Hope that helps if you were wondering where to farm

if you really want to blaze through xp though, pair with a druid, get an xp, haste and energy regen lix (health also if you can't find a druid, if you find a mage they might solve the energy problem too) and go after mobs 4 lvls+ over your current level, just don't mess too much time with 3 or 4 stars, takes away precious lixing time :3