Transplanting a common boxwood

I would like to get some input on transplanting a 20 yr old common boxwood that is 9 ft tall with a 4 ft spread. The tree is near the house foundation, so it is getting large for this spot. I would like to move it to the boundary of the property as part of a mixed privacy border.

I have read theses trees have a shallow root system, so that moving might be easier. I would doing the work myself.

Transplanting a common boxwood