[data] cert gain within the outfit
I would be interested your cert/hour gain to have a look what to expect. You may be able grab your data over at PSU:
(not all characters in database yet)
There you have your time played and your certs. The data that is available seems to be fairly accurate.
Out of curiosity I checked some of the leaderboard top players. Those rank up to ~ 100-110 certs/hour. But I suppose that's also due to xp boosts and membership bonus (as well es being good)