ASK-21 - is a tail dolly necessary?

My club is buying a K-21 for student training and I am wondering if a
tail dolly is necessary for ground handling?

We plan to get the tail wheel option - not the tail skid.

Does the K21 balance like the Twin Astir so it is easy to turn on the
ground when towing it back to the launch point?

When empty, does it sit on the main and tail wheel, or main and nose
wheel.

Anyone with experience operating a K-21 please advise

thanks,

Dave Springford