WooCommerce Tax, Variants & Shipping

I run the NOTTOX store on WooCommerce and need a few essentials put in place so the shop is ready for nationwide sales. First, every product must automatically collect Hawai‘i’s 4.5 % tax at checkout... (Budget: $30 - $250 USD, Jobs: Customer Service, eCommerce, Inventory Management, PHP, Shipping, Website Management, WooCommerce, WordPress)