Hey Ben,
The Milky Way itself looks great! Lots of nice detail in it.
That said, the sky is a bit too dark, almost a full stop.
Then the ground is probably close to 2 stops too dark.
Moonless nights will give you the very best Milky Way of course, and as we have discussed in the past shooting 3 or 4 days after the new moon can give you the best combination of Milky Way detail and faint moon light on the ground so it’s not just a huge shadow on the ground.
The solution to the ground is to brighten 5 or 6 shots, and then stack them and use a Median Blend as described in tutorials by Kyle and myself. Noise Reduction software is okay, but stacking and blending will give much better results. An added benefit from stacking a few images and doing a Median Blend is that also brightens up the ground just a bit.
Then, blend that into the sky that was brightened. Use a Luminance mask or my technique to retain details in the Milky Way and not have them blow out.
You have the makings of a really awesome Milky Way image, your best yet I think if you just brighten it.