When it comes to log cabin quilts, I use the pattern as a road map and make the log cabins in my preferred method (the Creative Grid rulers) Since you already have your fabrics cut, paper piecing may cut it too close, unless you do a cabin with an extra round on it, or do a smaller block, ex finishing at 8 1/2" instead of 9". Good luck and remember, the quilt police will not come around and arrest you for not following the directions in the pattern!