I would try at whatever setting you and your machine are comfortable with to start ;)

V-bit are awkward for feed/speed as the diameter is not fixed so the speed will only ever be correct for one part of the tool. Wood is very forgiving and people do this every day so we know it can work. If using router bits, they sometimes come with recommended settings on the pack and routers are generally high speed so these tools would suit the spindle well.

Its all a matter of breaking tools and learning - I shudder to recall how many new carbide bits i smashed when learning the settings, its a sharp lesson when you put a new £15 tool in and it only cuts 5mm before going in the bin :)