Funny you should mention doming. I don't clear my phone text messages as often as I should, just the conversations that get into the 1,000+ mark. I looked at what we discussed over 2 years ago and I said that I thought doming was going to be your biggest problem; suggesting placing diffusers so you'd open up holes 40'-50' in diameter in early winter so they couldn't dome over with snow. (I was actually looking for the Sainfoin conversation because I couldn't remember it's name nor species)

Once ice/snow gets on a pond I recommend running the diffusers 24/7 because of that.

I believe it was Blair in Canada that had a video of his pond doming over and what happened when he either shot it or threw a rock on the dome. It was more explosive than yours!!!
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).