Gravity Forms // Stripe advanced integration

I am looking for someone who really knows their way around Gravity Forms and Stripe to assist in several areas we work with. We have 4 gravity form pages with stripe feeds associated to them, 3 of them are new product purchases and 1 is a invoice payment page for existing customers. On the 3 new product forms I am wanting to populate product description and also customer description with all relevant data. - For product description I want Company Name - Product Name to appear in the description line. - For customer description I want Person Name - Company Name to appear in the description line. --- On the 1 invoice payment form I am wanting to populate product description and also customer description with all relevant data. - For product description I want 'Payment for INV-XXX - Company Name' to appear in the description line. - For customer description I want Person Name - Company Name to appear in the description line. --- One further thing we are interest in knowing more about and trying to achieve is a way to link email addresses to customer id's in stripe (without using a login of any sort) so that when a company that makes a lot of payments does not create a new customer every time they make a payment in stripe as they use the same email address.