Using cocart plugin finalize cart system on my headless woocommerce site (using nextjs, react and wordpress/woocommerce as backend) + bonus tasks

Hi All, have one quite big project that is already near finalization. I don't have time to finish it off. I need someone who IS experienced in headless woocommerce and CAN finish some tasks. I'm using nextjs, react as front-end and worpdress & woocommerce as backend. I already started the cart system and kind of works but needs further improvements to be finalized. I have also more tasks on this projects such as filtering using wpgraphql and creation of wishlist but whoever can finish the cart system will be gifted all other tasks.