CSGO Jackpot Coin Flip

I would like to introduce a coin flip system to my website, where one user puts in say $50 worth of skins, selects the Terrorist or Counter Terrorist icon (similar to heads or tails), lists up on a page for another user to challenge them and deposit the same value in skins and would be forced to use the other team. It'd be completely random and the skins go to the winner, with the bot keeping a certain set percentage for rake fee. This would involve steam integration, PHP, and a javascript for the bot. We will discuss prices.