Your 3k Kh/s is in the right neighborhood, but nobody can give you an answer as to the daily profit, because there are just too many variables to play with. It will depend on what coin(s) you are mining and its difficulty, then it will depend on the market price of the coin(s) the coin when you go to sell and all this is subject to change by the second. Just go to http://www.coinwarz.com/cryptocurrency and watch it for an hour, refreshing the screen every 10 minutes and this will help you see some of how hard it is to pick the winning coin of the moment. The best you can do for the long term is to try to find a coin that maintains a reasonably profitable price, or you can attempt to pick the flavor of the moment whether that be the hot coin of the moment or trying to pick a newly released coin that you believe will one day be a winner and mine it for speculation. I hope this can help you see why there is not really a way anybody can answer your question.
I was just hoping to get an estimate
looks like around $20 per day