I did, of course I run almost 2000wRMS of stereo equipment as well. Anyway, I recommend running a 2nd battery any time you are doing a system that will pull as much current as the one you are looking at.
I have a feeling tho, that the Opus will be forced to continouly output > 150 watts on that setup. It looks like you will likely pull 190 watts, which means a very short opus life. Check it out yourself at http://www.jscustompcs.com/power_supply/