[RadiozRadioz]

Use tech you already know. Accept its limitations. Compared to how much time people spend thinking about it, tech stack is likely far less important than most other choices.

I've got this wrong before, I've got it right before. A new company sounds like a good opportunity to use new tech, but It's disarming if you can't solve a problem because you haven't mastered your tools yet. It slows progress if you have to learn on the fly. In contrast, using tools you're already comfortable with gives you really good momentum.

[marklubi]

I would definitely agree with this. When you're starting a business, a very key part of it is velocity... use what you know well.

Once you've proved that it's viable, you can go back and rework things to be better/cooler/whatever