Congrats on your new scope
it should serve you well.
A good mount will be key to good images, if you stay in the City you'll be lucky to get a couple of minutes without them getting washed out with light pollution, but if you make trips out to a dark site the mount and sensitivity of the camera will be the limiting factors.
I reckon you can't go far wrong with either EQ5 or 6, they can both be tuned and tweaked to improve performance, but good polar / drift alignment will be important either way.