Bibiki will give meh exp at 64. Aydeewa is your best bet until you can move on to the bigger mobs like flans or what have you. I recommend the rangers around the little BLU quest pool/pond/whatever. If you pull them to the pool, you'll be free of possible links and from what I recall, they don't run away and aggro the whole place.
Pso'xja is far too low for a level 60 BLM. It's an awesome place to level but probably in your early-mid 50s.
I'm not sure how much exp you'll get in Newton at that level... but that place is dangerous. The camp is near a zone line, but it's on this tiny wooden platform crawling with moblins and bugbears which you have to sneak past everytime you want to kill one of the pets.
Edit: Also, if your friend is going to use somepage.com to find pets, I would advise to stay clear of DRGs and bst/smn mobs which detect by sound (such as fomors).