The one I’m working on at the moment is 11MB but in testing is hitting the mid 90Ks in a few cells.
Another one with 4 seperate areas/landscapes is 13MB, but I’ve hit the 100k and moving everything apart.
Your doing well to get 75k with 35MB compared to me, but I don’t think its too much, we do have a limit of 400MB. The important thing is the cell memory ingame.