Solid roller. Piss on hydraulic rollers. If you want to use a hydraulic roller lobe and solid lifters that works. Just lash it at .002 cold and go.

Depending on the grind, you could find 35, maybe 40 HP. Why so low on the RPM. You should be shifting it at 6800 or even 7000 if the parts are decent and your rocker arm geometry has been corrected.

The right grind and up the RPM a bit and you could find 50-60 HP maybe a bit more.