If you want some payback do adamant platebodys again. Artisan workshop is great way to waste your money totaly like into sink. Gold bars with gauntlets for cheap and slow xp. Oh and dont forget about dialy free 30k xp via assists.
If you can afford better amulets ... Its really no matter which ones u string, plain gold are mostly common used in. Ohh and dont forget about free 4 craft xp on each string amulet cast :)
Its really annoying if you want stay longer because sometimes ( especialy with highter cape ) u get only noted drops, so you need to continue bank items and withdraw horns/hides - in case of uni resources. But if you are determinated, why not ? Its cheap but boring method to get seconds :P
Dragonstone (e) work well also on Jad. Anyway all you need is to mastery prayer switch which i cant even afford by myself and fail all the time on him. Good luck :)
Theres noticable change in xp/hour when you use scientles potions everyone will say you that. I`d prefear Wolpentinger as a summon cause it give invisible +5 and last for 2 times longer than polar bear, and dont bother so much while hunting. All other things seems perfect ;)