Yes! Start Green Dragon Killing, I was Making about 1m or so a hour, GL with it oh btw, Fuck those Cannon Noobs, If there is any then just Half kill the dragon and let them waste their balls on it Good Luck man!!
Yeap green drags are definately one of the biggest money-makers for your level.
Maybe if you don't like Green Dragons then i would suggest trying flipping/merchanting. You don't need much to start but if you do this will doing your everyday runescape deeds you will make extra cash on the side. Personally, i would do a combo of Green Dragons and merchanting/flipping.
Because your only 109 cb and green drags are the best your your level. And people say Merching because there are people who have made billions from investing into merchanting.
Kill the Green Drags in the Chaos Tunnels; for one, it's a multi-combat zone so it's relatively easy to deal >half the damage and let the bots finish the rest, and two, you can't bring a cannon down there, so no need to worry about that.