What a beautiful group, love it!!!
I am in a similar predicament with a quilt I am working on. I have been searching through Quilters cache for blocks that have 4" centers for my fussy cut. I do not know the size of fussy cut you want for your focus fabric.
I would suggest 2 extra fabrics, one a solid teal for some small accent squares, and a black for contrast. That would give you 5 fabrics to work with to compliment that beautiful fabric.
May I ask the name or manufacturer of the fabric?