212's are definitely not too big and the downwash on a 150 line is minimal, and doesn't even hit the driller if there's any wind at all... just sayin'! 120 moves per day at 5-7000 feet sometimes with a 212 so I'm fairly certain it works!
A B3e will do 3000 lbs at a couple thousand feet in the summer??? Holy cow is all I can say!