you will probably have some of the same fabric next to each other in any jelly roll quilt.
with your limited number of fabrics. I would cut the strips in half and mix them up. You will still get the effect but shorter lengths. With jelly roll quilts, I don't believe it makes a difference if two of the same fall beide each other. That is the beauty of the style. I would not stress about it Let the strips fall where they will.