I have a few builds that really shine at wattages around 50 however my favorite build to date for this range is a 26G Dual Coil, Wrapped on a 3/32 drillbit, 8 times on each side! If this type of build doesnt work out, I would opt for going for a single coil, trying what tmcase said above and go for a clapton build! Also, because your onlyu pushing 50 watts, while tempting to use wide open, the builds with function best with limited airflow! Good luck!
*EDIT* There is also this build that I made today for a customer that I think would work well for you! 24G 8 Wrap Dual Coil, 7/64th drill bit, ran at 45 watts. Great build and flavor is on point!