A design wall would be very helpful ... stick up all your squares and then just chain piece the rows together. It really isn't hard at all.
The hardest part .... making sure that your colours/blocks are in the right place!!
Two examples of square work that I have done that's somewhat comparable to what you're heading towards..........
http://www.quiltingboard.com/picture...e-t114217.html
and
http://www.quiltingboard.com/picture...r-t136789.html
..............