Bigcommerce Stencil Cornerstone Theme Upgrade

I'm looking to upgrade my BigCommerce site, [login to view URL] from it's legacy "blue" theme to the new stencil framework. Specifically, I'd like to use the free stencil cornerstone light theme as it has been optimized for speed and one of the main reasons I'm pursuing this template upgrade. Requirements: -Developer must have considerable experience using the BigCommerce Stencil themes. Specific experience with the Cornerstone theme is highly desired. -A basic mock-up of the new site shall be provided using the Cornerstone theme - with the same general look & feel / branding of the current [login to view URL] site -Development of the new BigCommerce site shall be done in a sandboxed environment to ensure no down-time -Project shall include at least 3 small development sprints that can include any of the following changes prior to being finalized: ---Design and Layout Changes to the Theme ---Navigation and Category Updates ---Browser / Device / Operating System User Testing ---Conversion Optimization ---Updates to content (text, imagery, internal linking, etc) ---Desktop & Mobile Speed testing with google page speed ---Minimum speed of at least 90 must be achieved for both mobile and desktop using the following google testing site: [login to view URL] As you can see -- the default Stencil Cornerstone template ([login to view URL]) achieves a score of 94/98 (mobile/desktop) -Project shall have a final launch sprint where the new stencil cornerstone theme will be applied to my existing Bigcommerce site at [login to view URL]; after making the change, the final design shall be thoroughly tested and final customer changes/tweaks shall be made as directed to finalize the project. I'm estimating ~20-30hrs of development and roughly 10 Days to 2 Weeks to compete. Thanks for your consideration on this project. Please only bid on this project if you have considerable development experience with the BigCommerce Stencil Cornerstone framework. Thanks in advance! - Derek