You are in a fortunate position that you have that option as well.
Just bear in mind that with Zzoomm you have no choice of provider. If you find that you don't like their Internet service or their customer service, then you'll either go back to copper or ultimately have a second hole drilled in your wall for Openreach FTTP. As long as you locate the ONTs in an out-of-sight place, that shouldn't be a problem.
Where the ONT would go is under a shelf that my router is on.
Oh yeah, I know full well what Zzoomm is and while the lack of choice of a provider is not a problem, the complaints about Zzoomm is. There are a fair few of them, but I have chatted to a couple of people with Zzoomm, and they have had no problem, even with the router which many people are having. I can see two Zzoomm routers on my phone Wi-Fi and the signals are pretty good, one is across the road and the other is next-door but one.
I got enough holes drilled in my wall as it is

one for the Sky dish that was and one for my old wireless broadband, there is also a massive hole with a vent that was put in because I had a gas fire, I have blocked that up with loft installation as it is not needed now and in lets in the cold I am thinking of blocking it up with expanding foam. they could bring the fibre through that, around the skirting board, then around the living room door, down the wall in the corner and though a hole I already have in the shelf to get below it and plonk the ONT where the Openreach VDSL modem is.
I need to make up my mind what to do by at least the end of May. if I do go for fibre, I can't see myself going for Openreach network.
Adrian
Desktop machines Mac mini pro with macOS Ventura, also pc Ryzen powered with windows something or other.
Plusnet FTTC