Need to develop and design 6 site. 6 site design and functionality will be same. you just have to setup it in different hosting and domain.
design idea i will give you.
Bundle Rate Shipping Module for WooCommerce
Contact Form 7
Jetpack by [login to view URL]
SSL Insecure Content Fixer
[login to view URL] Live Chat
WooSwatches - Woocommerce Color or Image Variation Swatches
YITH WooCommerce Ajax Product Filter
YITH WooCommerce Ajax Search
YITH WooCommerce Wishlist
SendPulse Free Web Push
Product Countdown WordPress Plugin
WooCommerce Live Sales Notification
payment getway setup
You must have premium theme as well as plugins
you have to complete it within 2 to 3 days.
you have to optimize all site by which site will be faster and will load easily