The Dark Horse has a huuuuuuge chamber, I mean huge. You will lose flavor compared to other toppers no matter what you do, best flavor comes from small chambers.
The Dark Horse is really designed for producing big, dense vapor and not so much for flavor chasing.
Are you running a high wattage
device or a mech? If a mech you are going to have to set that
rda up with a pretty low build, maybe .25 before it really shines. If you have a high wattage device then build something maybe 1.0 to 1.5 and crank up the wattage on it, could even go higher if your mod will push it.
Good luck, let us know how you make out.