LA318 Edelbrock Magnum v RHS LAX Heads

Currently at the cylinder head selection stage: Seeking advice/experiences/thoughts/comments on choosing/fitting/using either of these two cyl head options on a LA318 for fast street/strip application in a Dart/Valiant 4:10 gears (Currently Mild/Standard-ish 318. (Yes I know & appreciate a 340/360 motor is a step up, am sticking with my LA318, Thanks)

I like the Aluminium Edelbrock Magnum, 58cc Comb/Chamber (If accurate) could help boost the comp ratio?? (Happy to change over rocker gear if it proves to be the better head). Port speed/velocity maybe too much for 318??
2.02 Inlet Valves: Not sure about clearance with 318 bore size, actual clearance/interference with bore and valve shrouding issues??

I also like the Iron RHS/LAX, less drama with the rocker gear, but bigger Comb/Chamber 62cc not quite as much advantage as the Edel/Mags?? Choice of 2,02 or 1.92 Inlet Valves which may help with the port speed/velocity issues?? Again Not Sure about the actual clearance with the 2.02 Inlets & 318 Bore Size and the associated valve shrouding issues with both/either 2.02 or 1.92 Inlets??

Very Happy to listen and to learn, Many Thanks in advance for any/all comments.....