When you're doing your stitching, do you stitch each block as one continuous line, or are you breaking thread a number of times? If you're breaking thread, that may be adding to the feeling that it is a huge task.
Your batting package gives the maximum distance between stitching lines, but more dense quilting will make the quilt more durable. I would encourage you to stick to outlining all (or most) of the logs - your quilt is too pretty to have it weakened by minimal quilting.