I run a few bridged, with Continuwuity.
First of all, great choice. It works perfectly and it's very light on resources. Totally different from Synapse, specially for few users (1 user in my case) instances.
The wa bridge works just fine, but I wouldn't rely on in for critical messages. Actually in two years I never lost a message, but .... Well ... My wife would NOT like that I lose even one message from her in real time.
Here my experience https://wiki.gardiol.org/5-matrix-hosting (personal wiki, no ads, no monetization)
I have no design, but will surely make a post with a few pictures down the road, thank you for the interest!
It's an open box approach, kind of a structure of wood around a metal motherboard plate, with place for disks and cable management, will keep taking pictures along the way and definitely make a post in a few days!