It seems unlikely that Perl would be the best choice to write this website in.
Timeslicing it into segments of 15 days might be a little too artificial. No one knows really how long it'll take, and it'll probably be 2-3 times your worst case number (the video game industry taught me that one).
Black and white might not be the best color to present the information in. It's simple, but even a little bit of color can help. Up to you though.
A point about black/white: be careful about the looks. You might get a false response if your presentation looks great. At least when pitching to potential cofounders, I care more about them understanding what they are getting into than blindly accepting whatever I say because the presentation looks cool.
Ideal would be a presentation that looks indifferent.
Like I said, we launched the site three months ago. Perl is working well for us, at least so far. And we launched five days ahead of schedule. But you are right, more often than not that won't be the case.
Your slides made me think you don't realize how small a niche you're targeting. Thankfully it's the internet, where even a relatively small niche can get pretty huge.
Don't listen to the Perl naysayers. There's amazing productivity to be had with it, if you can deal with it not being "cool" these days. I'd recommend checking out Catalyst ( http://dev.catalyst.perl.org/ ) and DBIx::Class (CPAN) if you haven't.
Nice. I need to make one of these very soon. I'm looking for co-founders for a new approach to online gambling, and most people don't really understand the casino business that much deep down. Something like this can help out quite a bit.
I post this because I am presenting to a local VC tomorrow for another idea.
I'd love any feedback on what I should put more focus on for the presentation tomorrow.