Just my two cents. Since y'all vary the house edge on the different events, it seems like it would be easier to set a 1.5 payout and have the site calculate the win chance (whether it's 66% or 64.5% depending on the edge). Because in my experience, the payout is the important thing to consider.
If I understood correctly.,you'd like to see the payout? If yes it's already displayed above from "win chance" box .