Build a Multisite wordpress marketplace for Schools and Small Business simple websites

I need a market place that can use wordpress multisite setup to create full website or just offer landing page services according to the following on my VPS or Cpanel account with backup: 1. Easily build a website for a prospective client in minutes by non technical sales staff by 1. selecting a theme, changing colors, logo, basic text and contact information, adding images to a slider and gallery and basic products/service 2. easily add ecommerce functions to a site 3. Easily create landing pages from templates and add email campaigns manager integration and survey 4. Option for own domain mapping 5. Option for Individual branding 6. Chat plugin to be used by each site for customer to business chats WPMU The hub to manage backups, scans, and analytics should be used. Install plugins like Pro sites, ultimate branding, domain mapping, SEO, multisite content copier, new blog template, support system, popup pro etc This should be built out on wordpress using WPMU themes, plugins, etc. Only persons who use the word **buildit* in reply will be taken serious and provide actual timeline and redundancy plan for backup. E.g. of what we want would be like [login to view URL] or campuspress where persons can go on an sign up and then create a website based on needs by selecting plan and templates.