Just want to add that whatever method you choose, your long arm quilter will be able to tell the tops that are thoroughly pressed at each construction point and those that are not--the well pressed ones allow a more "seamless" quality to the quilting, while those that the pressing left "rolling hills" will either require the quilter to press (and cost you $$) or if the blocks are sewn in a way that the seams can not be pressed flat, it will be more likely to have little tucks, etc in the quilting. Doing charity quilts I can just about tell which ones got thoroughly pressed and which just got "done".