erm, tbh I think you should just have 2 accounts, one staker and one pker. Most stakes are done without food so it's all about how much damage per second you can deal versus how much damage you yourself take per second. Of course if you get your dps higher than theres, with no food you win.
As for Pking, you can eat, farcast if you wish, use teams, and of course you don't have alot of mils on the line most of the time (usually), so its a whole new scenario. Making an account to try and accomplish both effectively would most likely just end up making an account that was mediocre at both and excellent at neither, but do what you want. As far as your pure is coming along, lookin good but I fear if you try and make it a good staker as well you will only ruin a good pure pking account.