360 build suggestion

Where are you going to find the lash ramp on that hydraulic cam?

If you want to think outside the box, order a solid cam that is cut with a more aggressive lobe than trying to reinvent the wheel using solids on a hyd cam.

FL or MM lobes from comp. Bullet can cut a cam set up for .904 lifters.

Call any good engine builder and they can order a cam that has faster ramps.

A good solid flat tappet does NOT cost a lot of money...Could have reached your goals alot easier in my opinion, AND not shave the heads to kingdom come so you could run it on pump gas, which is really the only way to race on a budget imo