Can you find flight times to watch takeoffs?

Not really. Most of us don't know either. Just park near the top of the hill in the Cheddar's parking lot, preferably in the morning, and be patient.

11 to 1 are the busiest times

You have to work there to know that.

No

Any nice day. They fly almost every day.

Not that i know off. They just take off for testing every so often.