Basic website to sell a few products

Requirements - Need a single page website with purchase now shopify buttons. The website needs to be easily updated by me with new buttons and product descriptions. - Need to be able to capture some required details during checkout that the user must supply, if this entry area is blank, the transaction won't complete. - shopify allows for required and/of custom fields. - Need to have these required details posted to a MySQL DB so they can be referenced in later transactions. - Need to have the checkout process check to see if a specific item is chosen for purchase that the entry is not already in this database,, if it already exists, the transaction won't complete. - When creating Shopify checkout buttons, there will need to be (2) types with an identifier. Type-1 checks this database for the entered Member I.D. and Type-2 does not. - Will need RefCodes that facilitate the ability to allow for specialized domain links that allow sales people to be identified in the system without the purchaser having to enter their sales persons name. Ref codes. [login to view URL]{some-code?} - If someone just came across the website and decided to purchase without being assigned a sales person, then the purchase would be assigned “Root” or Owner as the sales person. The root is the owner. - Will need a stats page that will display the analytics of what has been sold and who the sales person is, or if no sales person is selected in using a ref code, then the purchase is credited to the owner. This would be located in a secured backend viewable by just me. - When orders have completed, the system should send an email to a designated email address and the Subject of that email should say "Front Sight Elite Order #(order number)" so my email filters can move the email to a designated folder. - The check out system needs to support payment options so the user can pay with Bitcoin, PayPal and Venmo. The system should track and validate all payment options. (I will work with you on this) - The website should have a backend that allows me to paste in the button code from Shopify. And enter the details in the backend for the description. Shopify have an WYSIWYG editor in addition to a page builder feature that is more GUI based. - The design of the Website should facilitate at least (24) items for sale though initially there will only be 3-5 listed items, (2) Type-1 listing and (1) Type-2 listing. - I already have a website host purchased for this website. I am sure there will be many questions