The HS 1.60 shaft mounted rocker arms and the K950 springs will create a box that you have to work inside of. Basically you'll be limited to roughly .750 net lift with those springs or .470 lobe lift. Those spring might also limit the type of lobe that you can run but that is a little beyond me.

The .750 lift limit will constrain the amount of power that you can make so that is the trade off. If those are the parts that you're going with then pick a cam that fits the parts that you have and live with the results. If you want to make more power than that then you have to step up to more spring and maybe different rocker arms.