Build Website Shell on Squarespace

I'm a twenty-plus year veteran of digital marketing strategy with significant global experience working on major brands. I've recently decided to do some work on my own and am wanting to launch a series of sites. The first of which is a fitness site. I've procured the domain name and would like the site to be built on Squarespace, as I'm fairly comfortable with this platform and think it will work well for my needs. The project consists of selecting & modifying a Squarespace template based on a wireframe, building the site as defined by the site map and some basic graphical design. An understanding of structured markup implementation on Squarespace would be a bonus. Content creation & loading will be done by my staff. This is the first of many sites that I am going to be launching so, if you do a great job on this, there is sure to be incremental work.