I disagree with that. If you get the EDM hole lifters, they will provide additional lubrication. You don't have that option with a hydraulic ft.
It is very important that you remove the inner springs, or you will increase the chances of wiping a lobe, regardless whether it is solid or hydraulic.
Why not consider the Lunati 401A6Lun:
Advertised Duration IN/EX: 276/284
Duration @.050 IN/EX: 243/251
Gross Valve Lift IN/EX: .518"/.530"
Lobe Sep Angle / Intake Ctr Line: 110/104
Valve Lash IN/EX: .026"/.026"
RPM Range: 2500-6800