More zerker pure help D=

As some of you may know, I'm building a zerker pure. And so far, things are looking up:

Atk: 60

Str: 74

Def: 45

Rng: 52

Mag: 60

HP: 65

Pry: 43

As you can see, i haven't fail it... Yet :lol:

I need a bit of advice on things I'm planning to do though.

Spending:

As of right now, i have 3 big things I'm saving for.

Filling my Zam book

Buying a Fury

Buying a zerker ring

I have about 2M atm, and I'm wondering in which order should i purchase these things?

I kill green dragons for cash, and do slayer. And i always have a steady flow of it from my kingdom.

Ranging:

I'm hoping to get 70 range soon.

I'm kniving at yaks, with ranging pots. I'm using bronze knives atm, and when I'm 60 - 61, I'm switching to black. I pot back up when my level is 3 levels above normal.

I've gotten 70 range at yaks before, on my DFS pure. And it was rather a nightmare. The look of that sexy black dragonhide is the only thing that kept me going =P~

I'd like some loose estimated exp rates at yaks with knives. Both black and bronze.

Quest reqs:

I've trained this zerker pure such a way that he will be able to do legends, DT, RFD, and all of the quests up to Roving Elves.

But, i need to get 50 agil, and 53 thieving. What's the fastest way to do this?

Thanks for your help in advance!