My wordpress install keeps complaining that I don't have caching - then it says "but site response and page delivery times are all good"!
I'm a bit over-obsessed with site speed. I think it's trauma from the early days of the web in the 90s. Photo sites took so long to load and move through. Before clicking any link, I'd hesitate and think, "is it really worth it??" So now I try to make everything instant.
I use multisite: I currently have two live sites plus a couple of test sites. Because my sites are small, I update the live site directly. I used to have a local XAMP environment as well, probably should set up a new one and use it for dev/staging/backup, but I'm too lazy
No experience with this, but I've been told that multisite installs are challenging to manage.
My recollection of the free SSL certs is that you have to keep renewing them quarterly - which is why I switched to a paid one. Now my site goes down only annually,rather than 4 times a year
I believe mine renew annually, but not sure. It happens automatically. Might be a feature with my host.
ps
Your site is very elegant. Mine isn't, but I wrote my own theme from scratch which probably wasn't the best plan.
Thank you. I left the theme to the experts, because I'd never pull that off on my own. I pay a bit too much for mine. It's also pretty heavily customized. My girlfriend is a designer and developer. When I get in over my head with something like CSS I just go to her and start crying.