Our experience is that Investors want to HEAR "revolutionary" but actually WANT "evolutionary"... because if it really is "revolutionary" they not only struggle to understand it, but if they understand the concept, they recognize they don't fully understand the risks and hence are reluctant to invest.
Uber wasn't really that "revolutionary".. they were "yet another taxi dispatch software" company, with 2 "evolutionary" approaches
The problem you are going to face is that with a maximum user base of 5 million world wide.... the likelihood of you gaining more than 10% marketshare before you have a competitor is low. So odds are your maximum market share is 30% of the 5 million. So you are looking at 1.5 million users.
depending on your pricing model that maxes you out at about a $300million -$500 million company at full maturity. Unless you have a solid exit strategy - that's not going to be interesting