Those fabrics are scrumptious! I did a purple and white Night and Day quilt using the paper pieced pattern at
http://www.quilterscache.com/N/NightandDayBlock.html. Please perform your own fabric calculations but I think it took less than three yards of two colors to make the center (I did a 4X5 block layout of 12" blocks. It was a total of 20 blocks for a center of 48" X 60"). Then, I added three borders taking the final size to 69" X 81". I'd play with the purple and print to the right for the blocks themselves and then play with combinations of your fabric to the left along with other fabrics for the borders. . (please abide by Terms and Conditions of Use when using patterns from quilterscache. :-) )
Good luck with your new quilt. Whatever you decide to make is sure to be stunning based on how beautiful those fabrics are!