Ok on my f2p pure..I have 56 magic. I'd like to get 82 magic...or atleast 71. What do you think is the best way of training the magic? (List what I'd need).
Actually, theoretically, Rock Lobsters would be much better to Burst as they provide the equivalent or better experience per hour. Also, they drop a plethora of Charms that can be used to train your Summoning.
For F2P, I would recommend either training in Fist of Guthix or High Alchemy as many people have already suggested. The only real answer to your question depends on your budget.