Do I just let the first version be built faster with the more common technologies
Should I try to find the right people with the experience in the stack I picked?
I feel like my technical expertise is actually hindering the progress of my prototype.
You have to let go. That said, there's nothing wrong with you choosing which technology to use. At the same time, avoid the thing to drag because the person you find doesn't do it the way you want it. From your point of view, what matters is that works, so you can move forward. If you keep looking for the ideal person, in the end, the only being affected is you, not the rest. It's your project that's being delayed.
Best of lucks!