I've set up #Haven on a Pi 4, and helped on a VM install. It wasn't one click but it's not very hard. In 6-12 months I wouldn't be surprised if Start9 had a bunch of relays to pick from, but I wouldn't start using them until after they do the big upgrade to their architecture
I have been looking at Haven, but I prefer running in a docker. I agree with you on holding out on relays on Start9 until after the next feature drop. Looking forward to having more normalize port services and less reliance on .local dns addresses.