Wordpress help required - Small job

Wordpress site - I need help setting up the various shipping options (two methods, Royal Mail first class and Royal Mail Special Guaranteed), based on product quantity/weight. I have all the weights and postage costs. UK delivery only. I also need help setting up the bank side of things and I have to use WooCommerce and VIVA Wallet because of the nature of the product. Maybe some other small bits too. I'm behind schedule with this so I need it done quickly. Thanks