I honestly don't think it's worth it seeing how even if it did get you to 85 slayer, it'd take ages to get enough whips to earn it back. Sure you'd get some levels...I'd say level 80 range or so 'cause you get 1/4 of the exp cannnoning i beleive. 80 slayer, which you'd still need to spend a decent ammount of time doing slayer to get 85. Sure, if you had like 50-100m i'd do it, but somehow i kind of doubt it. I know i wouldn't do it. 80 range = 15m from 71 I'm using bronze arrows, spent about 300K and it should get me to 80 range. Slayer, i dunno but personally i'd meelee the whole way :? It's your account though, so i can't decide for you. Good luck with it anyways.