hah ok you are not alone i don’t think. even just a extra space or comma or missing quotation can bork an .yml file.
well if your forum is up and running now, then the build worked. rebuilding can take a while with that hardware config you have, but it definitely should be enough to run a forum. i’ve used that size setup before. just make sure you let the rebuilds run. it may pause and seem to stop for awhile sometimes, but it will push through. you will see the block of yml config at the end and be back at the /var/discourse prompt. that’s when the site will spin up.