Comp Cams XR280r thoughts to given combo

I appreciate all the feedback. Dcuda69s car sounds similar to the direction I am heading. The power curve should be awesome with a manual transmission. The vacuum and idle characteristics should hopefully work good with Holley sniper. My head's came with the hydraulic roller springs. I will likely change to heavier as they are on the light side. Debating on the sportsman lifters still.
Summer time and busy with other things so this project is going slow. Engine is on stand ready for cam install. TKX and Quick time bell on floor waiting to be mocked up to start modifications to floor. Similar to TKO.
Car will be prepped for cornering as well as take off so may not Excell at either? Will be asking alot from my tires.