We do have some notes at: http://www.shapeoko.com/wiki/index.php/Endmills#V-bits
though usually the suggestion is to slow down due to a lack of chip clearance.
My suggestion would be to start with the settings for MDF since poplar is pretty soft in comparison to most other hardwoods:
1/4″ #201 or #202
7.62 cut depth
1 Dewalt dial seting
2.75 Makita dial setting
2032 feed rate mm/min.
762 plunge rate mm/min.