Would recommend a beta. Letting users try your stuff is important, so you can hear about their experience (both good and bad). It's tempting to slog through it all yourself and show up with a final product, but you may not catch all the bugs/leaks/bad UX. With any new project, my eyes will eventually glaze over and I'll stop seeing the details, and I need a fresh perspective.
The collective hive mind is always greater than our individual ones.