Re: how to change text on checkout-page?
This is just a portion of larger customization I have done for a client. Not available as a module in the marketplace. If interested open a ticket @ support.cflsystems.com with details what you need and I can give you an estimate for putting together a custom module for you.
One thing to keep in mind what you see is not for multivendor version and will not work on it. I don;t deal with multivendor at all.