Seeing the close ups, I like it. I will have to keep an eye out for 'grey owl' myself. it looks like decent bonsai-able juniper. I still don't think it is ''pure'' J. virginiana, and being some sort of hybrid would be a good thing.
I think you might have 'over did it', with the pruning, but who knows, maybe it will be okay. My suggestion would be to toss it out in the back yard and forget about it for 2019. No repotting. After that prune job, a true J. virginiana would be killed outright by a repot the same year. Now if it is one of the more tame juniper genetics, repotting the same year would be more a 50:50 or 60:40 or a 40:60 chance. I can't say for sure. Even if I had the tree in front of me I would not be able to say a repot in 2019 would be a good idea. Best hold off until 2020 for the repot. Don't do anything drastic after July 2019 for a planned May 2020 repot.
At least that would be my plan. I am not a ''juniper expert'', I've got a few, maybe 4 varieties, most in early stages. One 'Itoigawa' Shimpaku I've had for over 15 years, but I haven't repotted it in 10 years. I quit repotting junipers more than in dire necessity after killing a few off a decade ago. The 'Itoigawa' is in mostly granite grit, so the mix still drains freely. Every J. virginiana I repotted shortly after working on the (which made them worth the effort to keep watering) every one died. So if 'gray owl' is a true virginiana, it will resent being repotted. Roll into repotting with a strong plant, not a traumatized victim.
But I'm no expert, and good aftercare is essential. I might just be bad at growing junipers. So others may chime in an suggest you can get away with it.