Advance config of WP multi-site, domain mapping and multi-site WPML

I'm ONLY looking for one person who has documented experience in advance configuration of WP multi-site for existing sites and domain mapping on multi-site. The following are the required tasks: 1# - Wordpress Multi-Site usage for two sites (requires enabling and migrating one to the other so it becomes a multi-site); 2# - Committing domain mapping of 5-6 different domains to the same WP multi-site; 3# - Making sure the theme and plugins are shared among all the sites so only one update is requiring for the whole network of sites. Make sure they are compatible on the multi-site. 4# - Enabling WPML multilingual plugin (I have the paid version) across the WP multi-site so you can easily switch from one language to another via multi-site and domain mapping settings. The primary website in question is a simple content-based site using Woocommerce as a product catalogue (not an ecommerce). No log-in (authentication) is used on the site and there are no plans to use it.