Not gonna lie but i am going to give my honest advice here.
There is nothing wrong with your idea, I think there is some kind of need out there for photo organization because people takes so many pictures nowadays that they dont even remember they have taken them.
But when I see your team is when I went, WTF? You have 8 people working on a pre-alpha photo app and you don't even KNOW if people want to use it.
AND you are hiring? What are you hiring for? More people to argue with whenever someone think of a idea? You need speed and focus at the beginning stage of a startup and having 8 person on the team is game over for you already.
Instagram is built with 2 person only all the way from original idea to pivoting to launch, and they STILL only have around 10 people on the team.
In fact there hasn't been a software startup I have seen in YC that has that many people. Most startups had 2-3 person for the first 2-3 years.
You should really consider about the size of your team especially at mvp stage.