You're not going to get any investors. You're asking for $32,530-65,070 for something you don't even have a demo of.

The gambling market is quite saturated and you're going to need much more money to actually advertise your way to the top. Me and my team are progressing quite well with our site, which partially includes a coinflip game. I suggest working this thing out a bit more before asking for such large amounts of investments.