I have rooted several Pink Brandywine and Park’s Whopper in a couple of large pots using Rootone. I was going to transplant them yesterday but ran out of time. These are from suckers like you said.
You mentioned that you are going to plant 2 or 3 50’ rows of corn. I think you might be happier with 4 or 5 shorter rows so that the plot is blockier. This helps with the pollination.
http://www.farmersalmanac.com/calendar/gardening/
I try to plant by this when I can. Might be hokey might work.
thanks for the corn advice. i’ve got the space i might just do it that way (blockier).