I tried an Epic on a Ronin and a Movi and was never happy with the results. The Movi balanced easier but both rigs never gave me good enough operating performance. And the rig was so heavy I could not hold the shot for too long. We never really could balance the Epic correctly on the Ronin
You should do what I do now. I run a tiny Sony A7s into a Atomos 4K recorder mounted on the smallest Movi, the M5. I use the Movi ring instead of the handles for easier operating. The camera and lens are dedicated to the Movi so we balance the rig at the start of the day and we are good to go. Switching from A camera to the Movi is very smooth. It takes about 30 seconds to turn on the rig and get shooting. The light weight of the total Movi rig allows me to operate comfortably for long periods of time. And I get fantastic shots! My AC uses the tiny Axis 1 wireless focus from the UK - a lovely piece of gear. For wireless video we use the inexpensive Nyrius Pro system mainly because it's so small. The key here is to keep your overall weight down and the rig compact so it balances easier and results in improved operating performance.
If you use a good lens and shoot wide open with the Sony A7s feeding into the Atomos 4K recorder you can get images that are so close in quality to the Epic no one will know the difference. That's my view. If you want to to stick with the Epic I would suggest spending the money to get a good Steadicam operator with lots of experience.