Can I run wordpress in the same VPS with a second IP?

Can that setup you recommend work without issues?

I did something with haproxy when I was initially trying discourse. I was somewhat of a noob and still am in matters of servers and stuff but did anyway, and learned a bit about haproxy in the process. If I recall correctly there were issues with SSL, and the behavior of discourse whas somewhat inestable but guess I did I do something wrong.

So my question is it possible to do the configuration you recommend without instability and “funny” issues, without extreme amounts of fine tuning?