I've found that to be optimal length for mesh on the rm2. If the posts were closer, leaving more space on the outer edge, I'd wrap the wick around.
Want it touching the cup.Needs to feed....
Use a standard 28g 10 wrap micro coil. Mesh heats with the coil essentially becoming an extension of the coil and expanding the heating area while imparting zero flavor.
Unless you were to make a SS mesh wick thicker than the 1/16th micro coil inner diameter I wouldn't go with a thicker gauge wire or lower ohms. Just my experience...