Best Offster Rockers for RPM

I am considering moving the pushrod holes on my RPM heads to open up the pinch point. I would like to use reasonably priced, shelf rockers on this setup (Sub $1000 price point so T&D, Harland Sharp, Manton are not being considered). What offset would you recommend and why?
Here are the readily available offsets I can find-
0- Stock Small block
0.180- Stock Big block (Indy T/A)
0.350- Hughes Big Mouth
0.650- Offset Big Block

The 0.180 offest rockers seems like a good bang for the buck and avalible in stamped steel, stainless and ductile all for around $300. I'm just not sure that is enough offset to be worth the hassle.
Seems to me you are splatted against the flow wall. There is flow volume and flow rate. Combine the two and you come up with port energy. This is an important value to consider. Also the pinch may direct the flow in an advantageous direction.
Seems like you need to watch some David Vizard videos. Some on here complain he only knows Chevy scrap. Not true. He has experience on pretty much everything with pistons and spark plugs. Get his How to Port and Flowtest book. He and his "partners in crime" (Andy Wood and Charles Servidio) are working on a Mission Impossible 318 project and doing some interesting things with it. Port energy and mixture quality are important factors to consider and are related.