Most of the time, our clients spend to much time messing with small details that don't matter.
You should get your product out. Kick some bugs. Make some mistakes. But always get it out!
The product you dreamed of won't work. It was a dream. This is reality. You need feedback from customers. You need to understand what they need. Then you can change it. Make it work in the real world.
Your customers are waiting for you. What are you waiting for? The perfect prototype? Head out of sand. Go!