At lower gear levels, a group is almost a must on the Timeless Isle, especially on a PvP server. One advantage with frost, that is HUGE, is you have a pet that you can heal. I cheat on those damn snakes that do such massive almost unavoidable damage and that is to le the pet take it, and heal it, not you. Well at least as many as it can take before the pet dies. They are a PAIN to try and kite, at least for me on most classes, and to heal through is rough also. But, with even 1 other person to take some of the pain away, most mobs end up being a cake walk. and each kill gives a personal amount of coins, so grouping does not cut down on the number of coins you collect, just rolling on the BoA's. A lot of people like to farm the frogs, and with good enough buffs from all the mentioned TI only items, you can grind those pretty consistently. But some classes like some mobs better than others. Some can be kited, some cannot, some have avoidable damage, some do not, like the birds have a directed frontal cone attack that can be walked through, same as the tigers, but the tigers can gang up on you if you are not careful with your positioning. Then there are the worms and a lot of the other non-aggro creatures that are easier to farm , but the rewards are fewer. I would hop around and find a type of mob you are good at killing and do those, until you get the gear you want/need.
By the way, what are you after there? Just the 496 BoA's, or battle pets? The Celestial Tournament? Having a goal of what you want/need from there helps with how others can/might help you.