No investor cares about what language your product is written in. No client does either. Use what gets the job done, think a little about scalability and modul

No investor cares about what language your product is written in. No client does either. Use what gets the job done, think a little about scalability and modularity from the start. Don't optimise until you have plenty of data. Over thinking things like this will prevent you from the initial release. If it works, great. But like all projects, you might have to throw away significant portions of your system away to grow. Being too tied to one specific technology will defeat you.