Code multi-currency options into a Wix Store

Hi there, I need someone with a good knowledge of the wix code to code a multi-currency options in the wix store for me, like in the example here: https://www.wix.com/corvid/forum/community-discussion/multi-currency-store-wix-code

Requirements: - drop-down menu for choosing between 4 currencies

- locking down the chosen currency in the cart after adding the first product -

if possible, channeling through to the currency specific checkout and payment options, so that the payment lands in the currency specific account I look forward to receiving your proposals. Portfolios of previous similar work are much appreciated.

Skills:
wix,e-commerce,website development