roller cam or flat tappet?

Small blocks have a particular issue when converting to a roller lifter. There is a chamfer on the top and bottom of the lifter bores that can allow oil pressure to bleed out of the oil band on the lifter. It can happen at max lift or if the cam has a small base circle it can happen at zero lift. So you can have the lifter bores bushed during which you could correct any lifter angle issues. This is probably overkill for your intended use. You can tube the lifter galley to reduce oil flow. Honestly I would run a solid flat tappet. I run 11.80 with a solid flat tappet, put an intake and headers and I would be in roll bar territory. Also I don’t know for sure but they just put stouter springs on the eddy heads when they say they are “for roller cam” I would get a professional opinion on the cam and confirm the eddy springs are good for the cam. My eddy heads stock springs were questionable at the lift they said they could handle.