(I don't think he was asking about seasons.)
Are you talking about 200
unique visitors per day, or just hits? If you're talking about hits, then 200 isn't even close. If you're talking about uniques, 200 isn't a bad number but not good enough to begin offering advertising.
I think once you begin nearing 500 uniques per day (that's about 15,000 uniques a month), you shouldn't have any issues selling ad space.
Until then, you can use AdSense. However, even when you reach that 500 uniques mark, nobody says you have to get rid of AdSense. You can still display AdSense ads and offer ad space at the same time.
I wrote about using
AdSense to make some money. You might find it helpful.