I emailed a southern ontario 4wd club, and got an immediate response sunday morning.
He said they too were looking to organize a similar style road trip, and when I asked if they would be interested in hosting us for a day or so, he was excited. He mentioned although there arent any public parks in the area, there are lots of trails and private land to wheel. Lets keep our fingers crossed, and maybe a loop around Lake Ontario might be a go.
Anyone else have any ideas to add to the preliminary list of ideas?