Important caveat: Epic is water resistant not water proof. If you expect hours of rain this is not the tent for you.
It has been a near perfect tent for me. I've used my FirstLight for the last few years, mostly in the Sierras, but some in the desert as well. The key is that in these locales there is usually no more than a couple of hours of rain, no leaks and no problemss.
In a longer sustained rain the tent will leak. First small droplets of water accumulate on the poles. Then the droplets get bigger and travel down the poles towards the corners of the tent where they drip down. A very small slow drip, drip, drip.
I've never experienced it personally, but I think I've read reports that after the drip, drip stage comes the more catastrophic leaking at all points through the fabric.
So your method of putting seam sealer at the points where the poles touch the tent does sound like something that would at least delay the drip-drip stage. Even better than seam sealer might be if this tent had pole sleeves made of water proof material. But alas it does not. And this is a pretty expensive tent to experiment with seam sealer on. I'd skip the idea, and instead only use this tent when you're expecting only limited amounts of rain.