Wordpress/Woocommerce -- Setup API Case Design - Entry of +/- 400 products -- Free or Zakeke Plugin

Project consists of linking Plugin from supplier (already in wordpress) which is providing SKU, Stock & Product titles, to either a free plugin Product designer/self Customised by designer or the Zakeke plugin (demo account activated). A google drive share is provided with all images: product image, mask, mockup psd files .. A Google Spreadsheet file is provided with all SKU nrs, titles, print method, size ... API supplier works with woocommerce but i haven't been able to set this up. It does provided title, SKU & stock already so acc. 2 supplier it's linked for orders, with limitations. (not printful) All 400+ products need to somehow be imported/linked/setup in Woocomerce/Plugin... for this i setup a demo with Zakeke but once sides, print mehthods etc comes along it gets complicated. Also 4 .txt files are required to import all products into Zakeke which i don't have, just spreadsheet. Eventually 1 time purchase of a plugin like a t-shirt/case design plugin is personal preference. Previous attempt got me envato wp-commerce plugin not compatible with my Payment gateway, Mollie. And no succes in implimenting it. I am looking for someone with the necessary know-how and determination to finish this project. 2 ppl have let me down already so i need a serious candidate. Payment of biggest milestone only when satisfied with a working project. ** Fee, total is € 125 ** If succesful more work needed in future like good geolocation sending customers to correct language, better placement language choice button, fix language choice button on mobiles, SEO and Google ranking, Adding 3d languague w/o fortune it would cost with current plugin (translatepress) .Design updates . Creation of slides with personal advertising of featured products ... etc.