I'm of the opinion that it's possible to over think these things and be over prepared, so limit yourself to a time. I'd spend the majority of your time preppin

I'm of the opinion that it's possible to over think these things and be over prepared, so limit yourself to a time. I'd spend the majority of your time prepping what an investor really cares about. That is, "how big is the market oppurtunity?" and "How do you generate revenue?". If those two things are compelling enough and you articulate them well, they will want to know more. Overall I'd say 4-5 hours on the pitch deck and then 1-3 practicing (depending on how confident a public speaker you are). Best of luck!