Finow is ok if your business is in the north of the city about 45 mins to the city and its Autobahn most of the way. However facilities are basic and ground transport would need to be arranged.
Dont know what you are flying but there was a 30t weight limit @ Finow for a while and then it was raised to 50t and later 86t in hope of attracting the low-cost guys. I have not seen anything in writing stating what it is now.