I would cannon/iron knifes rock crabs to the east of Releka until around 50. From 50-75 I would use MSB/Rune arrows on fire giants in the waterfall cave. From 7-99 I would either blowpipe NMZ using mith bolts or chin on ape atoll.
Do you guys even read threads? He has a 10m spending limit and you're going on about blowpipes and chinning.
What range level would you like to achieve? Iron knives at yaks is pretty good xp. Ogres by castle wars are good too, fire giants has been mentioned as well.
Once you start getting higher, you can do Aviansies in the God Wars Dungeon for some decent money. Don't always train at the same spot or you will get bored, switch it up a bit. Good luck with your goals, if you have any more questions feel free to ask