I just wanted to say thanks for the support!
I ended up having to do a manual extract AND safe mode install (my theme and required/bundled plugins were outdated and creating issues in the migration process)
After the extraction timed out in normal mode, I clicked try again which goes back to step 1. Leaving this window open, I went to my file manager and deleted everything but the archive and installer.php, extracted the archive, and then went back to the duplicator installer. I had to “enable” manual extract via a link that appeared after the error, it wasn’t active in the dropdown. After that it worked fine, and then I just had to update my theme/plugins.
