Glad to hear you got things sorted out!
You can use any browser, but chrome/chromium has a slight edge with support for devtools. My workflow tends to be to get stuff working in chromium and then validate in firefox once things are fairly complete.
With regards to regenerating the DB from the REPL, it largely depends on what went wrong. luminus-migrations does provide rollback and reset functions, but that will only be as good as your migrations are. If you’ve made an error in writing a migration file, it won’t help. I’d recommend using SQL (either from your favourite client or from the REPL) to inspect the structure of your tables and compare against what you expect.
Happy Hacking!
Scot