Even though they slay for those drops most of the gain wont come out of them, especially on ice wyrms they have drops that OSRS gold are amazing, the SOL is only a small bonus. The 1/540 comes in the ordinary fall (mite be 520 cant remember) but it comes from gamers submitting exactly how many kills it requires them to get a whip, yes its possible to have in your range, but isnt the drop rate.

Helm of Neitiznot - it is a good'balanced' helm, get Verac's/Torag's helm if you want more defensive stats or Fighter hat to get offensive stats (about the same stats as a Rune full helm but together with bonuses in the Stab, Slash and Crush attack fashions )

Guthans Plate - Adequate, Fighter torso provides a nice Strength bonus so that it's also a fantastic alternative if you can't manage Bandos; additionally I am not 100% sure about this but I believe Torag's (and Dharok's) gives slightly improved defensive stats and is worth 650kish so that it's worth getting imo. Verac Skirt - Obby shield (working towards rune/dragon defender) - You should really get a Dragon defender. Glory Amulet - Fury would be better of course, but Glory is a good alternative and much more economical. Explorers Ring - Warrior's ring is not very expensive (300kish I think?) So you should get one. Obby Cape - If you do not have a skillcape/fire cape that is the ideal cape you can purchase so that Rs 3 gold it's good.