Familiarization OSRS gold is a D & D which will radically assist you. It's a bit long to describe, so please check out a youtube manual for this. The benefit for doing Familiarization is that you get a 40 minute period where all the creatures you kill shed not single, not twice, but TRIPLE charms. I camped waterfiends for all those levels also. You should be able to kill them fairly quickly. Doing Bork daily also helps to include up the blue charms. Bursting rock lobsters used to be good charms, but I see it as somewhat of a waste due to the massive money loss you make.

Cannoning the greater demons at the Forinthry dungeon additionally used to be a quick source of charms, but I don't know how great the cannon is at eoc. I expect if you camp waterfiends, you need to be able to readily get the charms needed for 74 from the time the pursuit comes out. Make sure you use your spirit rubies/emeralds/etc whilst training! Also think of performing a quest like While Guthix Sleeps or Blood Runs Deep, each of which offer you a gigantic quantity of experience you could put into summoning.

I'd suggest Slayer. Slayer exposes you to a wide variety of animals which all give you a lot of profit, the majority of the time. You can choose from there on which is your favorite creature to kill. Blue Dragons are excellent money- the drawback is that you want 70 agility for it to become efficient. Until then, you can kill Black Demons, for money, perhaps.

I am unsure of the price however. You can always use Royal D'hide, that is at a nominal price. It's possible RS07 Gold to upgrade to Ganodermic, which is around 3M.