Nice guide. =)
Three suggestions:
1)You can easily start with the spiders at lvl 80, or even 75(!)
2)You might add monks in there, after chickens but before minotaurs(?) Don't know if this is the best script for them though...
3)Draynor jail guards at like lvl 55-70? (I don't know if they'll work with this particular script, but it doesn't matter if you die, you can just bring 3 items and run back from Lumbridge.
Personal opinion: BOO DEF PURES. THEY'RE THE WORST!
Current Project - Superheater :: Mithril Bars - Should be ready for Members application soon