At those temperatures I would expect them to hatch between 65 and 70 days, so you have a few more days before you need to more them. You can move the last clutches eggs and put them with the other eggs in that same clutch. I know you have no room, but putting them inbetween the other eggs is just fine for now. All your trying to do is put them somewhere where they won't roll. After your first clutch hatches, you'll have room to spread out again.
Danny