WordPress expert for Order page (Signup/Login, Place Order, Payment)

I have a website designed but need coding expertise to revamp the ordering process (e.g. woocommerce). Need to create a process with the following pages:

1. Landing page price calculator modification
2. Signup/Login
3. Order Page
4. Payment Page with Strip (PayPal & Debit/Credit Card)

I have sample sites that I can share for clear understanding.