But please, PLEASE know that that is a prototype and that your technical cofounder will likely want to throw it out the door on day 1.
Nothing is a worse conversation than "okay, so I have the v0 built offshore, but it just needs X, Y, and Z". Great start, but let me pick the stack, framework, etc. so I can do my job quickly. I'm here to make decisions WITH you, not be your code monkey.