I think building your own backend before you have funding when a simple API is available is a pretty bad idea. You don't know if your site/app will ever hit cr

I think building your own backend before you have funding when a simple API is available is a pretty bad idea. You don't know if your site/app will ever hit critical mass, why waste the time and money in building an elaborate backend system when you can develop that down the road when/if you have something worthwhile on your hands.