Design HTML Website - Seo friendly

Need to redesign an existing website in HTML which should retain page rank for my keyword “Timesheet Software”. It should also have the following:

* 5 Page responsive html css bootstrap website
* Clean & optimized code
* Cross-browser compatibility to latest browsers
* Google page speed and gtmetrix
* SEO friendly
* Reduce loading time.
* Optimize CSS and images.
* Home Page to be Landing Page compatible.
* Popup for Signup
* Provide Source Code/ File