stock volume

If I want to buy 1000 shares of a stock in a single day, what should be the minimum daily volume for that stock?

 

what's your goal? To trade in and out all day or to just make one purchase and hold? Or something else?

 

I am going to get in and out in a one week period.

 

average volume * stockprice >= usd 10 million to insure liquidety
preferable 20