Nice work! You are already much further along than I on my own site. I use mine as a playground mostly.
Watch for that jump of elements between home header and the subpage header. Does your site really need two header assets?
I agree with you on SquareSpace. It along with Wordpress have become tanks in the mud.
Again, leave message for me on my member page if you have any issues to work out and I can chime in. Happy 4th!