Sounds like you have 3 fabrics - the print and two blenders. I would choose a compatible neutral of a different value. (If the ones you have are all med-dark, maybe add a light.)
Pinwheels are fun for a small quilt -- make half the pinwheels going each direction, and alternate with 4-patches, using the fabric with the most contrast for half of each block.
p.s. it's ok to piece the back so some of the print can be used on the front!