With a cam you have to tune the idle for your desired drive-ability, if you want it to lope at idle then you're going to set it lower but that can lead to an off idle stumble if you're not that experienced with your carb. You should find a base idle that gives you a good feel, probably around 10-14 degrees with a 2bbl, then set the idle preferably with the car in gear (that can be difficult to do safely, a friend helps). When you add a larger cam, even a mild one, you're going to tend to have a higher idle than you would like in park and neutral.
In short I think you should shoot for around 650-750 with it in drive, probably be closer to 950 in park, but the timing will make a difference in idle speed and quality.