2dguy Don't get me wrong, technically it's doable on my own
Well, I definitely don't want to challenge you but, I feel its little over ambitious. The only thing where I am missing flox now is the logging feature & web ui. Which is also possible in Firebase, provided you have to come up with your own web ui.
Also i never used flox as a full on database where I need to query and fetch data for each and every thing. Still I had to pay for extra flox ops once or twice an year.
My main concern now is scalability, its good when ops are under the limits and user base is small.