Take the dragon slay gloves after 70 Slayer. I've got them too, and they're absolutely great for all the Blue/Red/Black/Metal Dragon assignments you get. Don't use them on Baby Drags though: terrible waste of charges.
Doesn't dragonfire always hit through magic prayer, unless you take a sip of anti fire potion? OT: good guide, but try making it a bit more.. erm.. readable :P
Kids that young don't understand the game. If they even make it through the tutorial, they'll probably quit after getting slaughtered by an angry goblin.