I would reduce the charges on Green Dragons rather than Blues. If you just wear black dhide top and bottom, glory and cbow, just go up to Graveyard greens and kill them, then tele edge with your glory. It's relatively safe from PKers(you won't lose anything important if they do kill you) and you can easily safespot the dragons. They'll die much quicker than blues, and their hides are better for crafting, since you'll be able to kill them faster and the difference between blue hides and green hides is small, so you'll be able to kill more greens than blues. Plus you'll get more DBones to sell and more loot, making it much more efficient and profiting.