Not OP and I don't have any specific questions right now, but if you got any general advice on frp you want to share, I'd be happy to read it :-)
Very basically, I set up a frps on the public server, and one frpc per service I want to have publicly accessible - where the frpc.ini defines all the specifics, so I don't have to touch the server regularly. Is that correct so far?
Edit: After typing it out, I came up with a question - what happens when the frpcs go offline? Will the server return an error, fallback, or just deny the connection?
Do you run homepage next to HA?
I mean homepage looks very sleek and I had a sudden urge to set it up :-) , but tbh, having HA set up for both browser/tablet and phone, I don't think I'd ever actually look at homepage...