But there are some things you must know:
First, is he a master?
Second, is this Feng Shui master's point really a Feng Shui Dragon Cave?
Third, is this day shift a good day shift?
All qualified, then it's ok. At least this feng shui master has to be a master. (Not a famous teacher! Sometimes famous teachers are obtained by advertising. )
Feng shui is easy to get, but famous teachers are rare; There are famous teachers, and good feng shui is not rare.