This looks fantastic and you left me wanting more! You should do a Kickstarter campaign to fund the feature.
Start by going to as many local theater productions as possible. Get to know the actors and tell them you like their performances. Then, when it's time to shoot your film, invite them to audition.
"in a market so saturated, Davinci Resolve couldn't even help"
I just shot this: https://www.youtube.com/watch?v=S4VU5pkRX6g
Pushing the dynamic range to its limit: wide open at f/1.4 + speedbooster in daylight.
If you took the titles (0:00-1:50) and moved them to the end, this would be quite a bit more watchable.