I would definitely flag them out before the dozier got started and would use the NW/SE directions to preplan the stand location on the field and plan the approach to the plots. I like the fields a little long and will leave some scattered trees in them. I think it makes the deer feel a little safer or something. After you lay them out take a GPS and see how big you have them, If possible I would make them a couple of acres or more each. Two plots on 40 acres is plenty, I wouldn't put but one myself.