Shirley,
I know it's a big challenge. Especially since this southern weather will have me turning on the AC, then 2 hrs later I add a layer of clothes and turn on the heat.
We had the longest freezing temps in history.
Then we had one 65 degree day and six more freezers.
I recon you almost have to have a therometer that opens and closes vents as needed.
I would baby my coleus all spring then steam them in one day.
What is Sandy up to?
Shine