VIETNAMESE GREEN ROBUSTA COFFEE BEANS

Good Morning, I am looking to purchase green VIETNAMESE Robusta coffee beans. I am also looking to buy in consignments of one 60kg a month approximately until I learn how to grind and roast properly. I am opening a VIETNAMESE COFFEE SHOP so the beans must be sourced from Vietnam. I am looking for a supplier who will supply me with the right type of coffee bean at the right price and will always remain a loyal customer if the supply and vale are consistant. Once the coffee shop is open I will increase my orders accordingly. I am then looking to open more Vietnamese coffee shops, as there are none in the UK, and sell my roasted and ground coffee directly to customers through a web site and my coffee shops.
All advice given by you will be listened to and appreciated as to grading of the beans and any pre-wash needs before being sent to me. The coffee beans are to be shipped to the port of Tyne in South Shields in the North of England if possible. I eagerly await your response. Thank You!