I wholeheartedly agree that technical advice isn’t needed at this stage and likely the main thing to solve for is how fast can you iterate to an MVP and PMF-solution that could allow you to fundraise further. I’ve worked with some startups where they outsourced on a solution basis to alleviate the risk of building the wrong thing. Architecture was ok but not the most important issue at the current stage.

Disclaimer: I run a consulting firm with fractional CTO services for startups and previously founded a startup.