With that RTA, I'd look at doing a microcoil (12 tight wraps of 28 gauge, 1/16th in diameter) with cotton wick. Just search that in YouTube to find plenty of instructional vids - it's no harder than your current setup. Best... vapor... ever (and flavor).
Alternatively, if subohm is what you're after, I'd do a 2-3 wrap of 28 gauge kanthal around SS cable with an ecowool sleeve over the end (where the wire wraps around). I've never had hot legs, hot spots or shorts with this setup and on an RSST it throws the vapor plenty.
I've never really had as satisfying a vape off of mesh.
Also, I'm assuming you're already doing the basics, like air hole orientation and volt/watt adjustment (assuming your
mod allows for the latter).
BTW: You should, of course, be fully knowledgeable about subohm
vaping before trying it - very bad things can happen.