Way too lean.

Everyone's going lean these days. Work lean and cheap, go to market as quickly as possible, fail fast.
While this approach works great in our time and age, it causes a lot of products (Jelly, for example) to come half baked.
The philosophy behind it is correct. Test the market as fast as you can, to validate your idea and gain ground. If you fail enough times, you might even succeed once. And one good success is all you need, right? (Yes, I am being ironic.)

However, unless your service goes ballistic right after launch, you might never know if it works or not. Hell, even if it does - What's your measure of success?

99% of the apps do not pass the 10000 download barrier. So what does success mean? You might fail your product a bit too fast there. You might even not know why it failed.

My advice would be to be a bit more thorough about your product. Get real feedback from as many people as you can (2nd hand friends are even better, as they don't owe you anything. You can even pay a symbolic token like a t shirt or something).

Don't launch too early, don't fail too fast. Thinking twice might not align with the cranky, wham bam lean approach, but might save you a lot of time and heartache.