Are there any further improvements that can be done that will allow further rent increases eg air cons ,paint ,minor rens etc
Future tennants for building if someone leaves (Is it a strong town?) 
I personally prefer to have commercial managed by local agent .
I have found commercial tenants put much more effort into maintaining and improving "their" building than residentual.
At the end ov the day you need to be happy with deal and be able to sleep at night.

Hope it makes ya a motza.

Regards appsie