I have not made this but I went and took a peek at it here.
http://www.hancocks-paducah.com/PRE-...4-by-72-Inches
While it looks intimidating the block itself is simple and the quilt is made up of the same block (done in color sets of three) simply flipped for the color placement. The key is keeping your fabrics organized to make the layered pattern formed by three identical blocks with one from the adjacent grouping (a different color set). A design wall or a place for you to lay out all the blocks will make it super easy for you. You can totally do this.
If HST intimidate you, you may wish to look into a thangles or other similar paper product. Or this will be the perfect opportunity for you to try out different ways of making HST and see what way you like best and gain a boat load of confidence in making HST and working with them.