In my experiance, I do not think 200mL is too much, however, you should have no issues pitching the recomended amount. The key is the fermentation temp. As long as you can keep the yeast near the low to middle end of their temp range during the first 4 days of fermentation, then you should not have any need to overpitch.
However, if you are not temp controlled, I would pitch a little high. 200mL should not be to high in this case.