I'd echo the thoughts of the others, calculate the amp draw of everything that will be running on that particular circuit simultaneously, and see if the breaker is rated for that amp draw. I'm in the process of running two dedicated 20amp circuits in the basement here right now for my calculated power needs (12ga), and since I know there's almost zero chance that all items will be on simultaneously, I'm well under the rated 20amps for each circuit, based upon my own calculations.
To get amp draw, simply divide the watts by the volts for each item. 100 watts divided by 110 volts is .90 amps.