Where can I find or consult with an professional consultant or experienced Entrepreneur for the best advice on mobile payments for a global audience?

My latest start up has developed a great MVP to go to market with in the next two months, part of our future feature offerings will entail mobile payments. As i am the vision of the company and plan the product road map ahead, i would like to engage with someone whom have expert knowledge and experience on mobile payments. I need to make decisions around choosing the best payment platform, processor, legal and compliance structure, user support and all the pains that i have to plan for in advance.