A tree with a circumference of 33 " isnt that big especially for a stand the size of a King Kong Lounger.You can do it more comfortably with a small loc-on but stay away from the windy days.
Have you considered using a ground blind like the double bull in your food plot,considering the trees are limited?
Another idea is to make a permanent tree stand using 2-4 of these trees or a ladder stand.