Sorry for the issues, the port problem was 100% my mistake! Thanks for that fix @tgxworld.
We’re trying to make setup a bit easier by prompting people for common values using the discourse-setup script. I can confirm the version as of right now works fine, I just built and bootstrapped a site with it.
I am not 100% sure the Let’s Encrypt stuff works, but @pfaffman will be testing it and looking into it today or tomorrow.