Single coil
tanks are tricky in my opinion, for what I prefer.
But to go off how the stock heads perform, I'd sudjest trying 26g kanthal at 2.5mm inertia diameter with 8 or 9 wraps (which ever is closest to 1ohm). And from there start at 25w and work up till it's "just right"
The wire prebuilt in the
rda is nichrome (80 grade I beleive?) 26g I think, but it has different heating characteristics than kanthal. I personaly don't mind it, but rather use kanthal.
If your Destin to use the 24g, try a 2.5mm or 3mm diameter rod and try to build to .6 or .7 resistance. From there start at 30w and work your way up to your preference.