Best place to train a range/mage tank?

[FailingHard93]

I have a range/mage tank I'm working on. I'm currently at 18 defence, 18 range, 20 mage, and 17 health. Where should I go now, and where should I go later on?

At the moment I'm F2P, but I may become P2P in the future.

 

[Christmas Crackers]

ehh, try barbarian village or stronghold? Then rock crabs at a higher level.