We're doing the PCA rally tomorrow that includes some of the same territory... may get some good ideas from that. Starting location would be somewhere between Bolton and Westford off of 495.
Should be able to do it next Sunday, weather willing. Probably do it as a later afternoon thing, ~3PM start leading to a ~5PM Kimball's Special.
Yes, weather looks good so we're on. I'm going to move this to another thread so we can get a count and work the details for this one event there. Watch for the new thread.