Simple holding website - using squarespace

I’m a one-person start up design company, I have a few completed projects but not enough for a full website, so I want to create a very simple holding site with a 3 page menu. I was intending to set this up myself using a Squarespace template, but I can’t for the life of me work out how to do this (essentially the navigating-by-arrows bit). Surely this is has got to be very simple?! I have put together a wireframe of what I’m trying to achieve - which you can see at: [login to view URL] I have employed a Graphic designer to create my ID and logo, so I have all assets including pictures and copy, So I'd be looking for a web designer to either: a) set up the complete website, or b) to keep time and costs down, simply select the appropriate squarespace template and build the template pages and site structure, and I could then upload pictures and text. As I've already spent my budget and used up my time limit, I'm hoping this is a pretty quick and straightforward job that would suit a web builder who knows Squarespace templates well. Later on as a second stage, once I have more projects, I would look at coming back with a fuller website design. Do let me know if this is of interest, and what your availability is and your estimate of time and fee for the options A) or B). If you are interested in this project, please let me know specifically what your experience is of Squarespace templates. Thanks, David