Anyone know how to automatically create accounts with WHM, or any sites with info on how to do it?

Yes, sure it is easy, you can even create the packages automatically on your hosting acccount, but do you have a server or reseller account?

What about ModernBilling Software?
There is a bunch of similar software but i can recommend only the one i have exp. with..
good luck with it anyway, hosting ain't the easy market you want to be fighting in