Killing Dragons is most possibly the best money earning method atm because pretty much RuneScape 2107 gold anybody with decent stats may kill Dragons. In your case with your stats it's a piece of cake. So essentially your choices are: Green dragons - Situated in the Wilderness as I am certain you understand, it's no problem to find an empty world because quite a lot of people do not kill Greens from fear of getting PKed; Blue dragons - Extremely easy to kill, Taverley is generally crowded and so is the Heroes guild but it's not overly difficult to find an empty universe. W117 Heroes guild is generally vacant.

And if you have level 60 Dungeoneering you'll be able to access Taverley source dungeon; Red dragons - Not really recommended because Red dragons can only be found in 2 areas if I'm not mistaken: Red dragon island at the Wilderness and Brimhaven dungeon and both are from a lender; Black dragons - Taverley is busy everywhere I would not even bother so Zanaris is the best option imo; Metal dragons - Not much to mention here, all metallic dragons are in the Brimhaven dungeon (Mithril dragons being the sole exception) and are not too difficult to kill and have fairly decent falls; Frost dragons - 85 Dungeoneering required so it is not really an alternative for you right now unless you feel like training Dungeoneering. It is also possible to try to make money with Slayer but if you don't get Dragon tasks all the time I'm pretty sure you will make more money just killing Dragons.

What Silv said are all pretty good suggestions. When I was your level I did . All the way from 60-70 plus it took me just like 3 days. It had been dull as you don't actually get anything but encounter there though. It is kind of weird because I don't remember what I've been performing 70-90. I know I have Chinned some tasks, umm and buy RuneScape gold done things like Ranging bosses, the Circus. Not to mention Cannon.