That should work well. With Bet365, Unibet, and 10bet you will get a ton of bets. Other good ones are Bwin, Williamhill, Betclic, Betway, Betsson, and Coolbet. Also, check out the post about clones.
Your profit largely depends on the number of bets you can place. With 1000$ bankroll you should place about 750 - 1000 bets a month to make 200$ profit. And 20% monthly return (on investment) is actually the average amongst Rebelbetting users.
The important thing you need to remember is that you can’t expect to make a profit every month, especially if you can’t place many bets. You might lose for two months straight but win big one month.