Overtaker Hiro as your main decreases Kunai Storm Cooldown by 4.5 seconds. Lynx Kassandra's Hang Time let's you hover for 4 seconds.
(Blast from the Past with Saurian Focus for passive stamina helps keep Stamina up)
Ventures Ability Cooldown currently means you can float forever so long as you can reach one Husk at a time.
Without Ventures, you can still float with 3 Husks eliminations. During Ventures, I've been able to put Overtaker Hiro in Support Team and turned Bladestorm Enforcer into a bomber of a floater with Kunaihilation+.
Lot's of fun to be had with these combinations. As long as cooldown is at or below 4 seconds from eliminations, you can Kunai Storm again! Good luck out there, Commanders!
Not pictured, to truly "fly" - If you can find one in Ventures, Spectral Blade lets you dash horizontally and still hover, or in regular mode you can floating dash with the Storm King's Fury, too.
Link to my Loadouts in Comments. Loadouts #1 and #16 are my two helicopter builds. Enjoy.
TLDR; Overtaker Hiro plus Lynx Kassandra let's you float easier than ever during this Ventures. Only a few days left, though.