I think you'll be fine - but I will say a little something regarding random flow. I recently added random flow to my tank in the form of a mini Polario 7M on the back wall behind my rocks, and replacing a Koralia 1400 with a MP40. My corals and my fish are definitely happier now that the flow in the tank is changing on a regular basis
I would look for power heads that you can either plug into a timer, or use with some sort of wavemaker - it made a HUGE difference for my tank