as for range you could try chinning ape atoll. I autoclicked it on both my 13 and 31 prayer accounts from 70-90+ expensive as fuck, but you will be done like 2 years before you would be at rock crabs lol. The falling rocks will kill you so you need to come back about every 20 mins to eat some sharks. If you need any info on how to set your guy up or anything hmu i got it down to a science I've done 10k chin trips before without stopping or banking. You can train mage here 2 same way after 70.