Leasing space and selling a building

[Dave Wittnauer]

I've asked a few questions about a building that I've inherited from my Uncle.  The property is located about an hour from where I live and while I've tried to make it work, it is really a hassle for me anytime something needs to be done and due to the remaining note on the property, I can't justify a property manager. 

I am going to list the property for sale soon.  I also have a vacancy in the building that I'd like to fill but haven't listed yet.  Is it ok to list the space and get a commitment on the lease and then sell the building?  My attorney assures me that leases convey to the new owner and it would make the property much more attractive for purchase if it is full of quality leases/tenants.  I don't want to do anything that would border on unethical with a new tenant and I don't know how this works. 

Thanks,

Dave