Others I have come across:
1) Franconia Inn: All snowmobile groomed for classic skiing mostly. Some trails are wide. Lots of snowshoe trails that could be used also. May have potential to custom design for Ski0 with many smaller-width trails (middle distance) S of airfield between inn and Wells Road.
2) Ski Hearth Farm (30k Morton Trails, One-way ! )
Both are within 10 minutes drive of each other.