Releasing my SaaS tomorrow - any last-minute advice?

I am going to release the Alpha version of my SaaS tomorrow. For launch, I am planning to post it on Twitter (although I have less than 100 followers) & a few subreddits. And then I am going to follow it up with a blog post later this week.

Is there something else I can do in regards to spreading the word about my product? Curious to know, how would you spread the word if you don't have a massive following.