wow that's a big ass reef tank! are you doing it just for the anemone? what other corals are you keeping with it? sps tanks need mucho more light than you can get away with soft corals. Also what type of sump are you running? how big is it? are you using an in tank overflow or a box overflow? How do you plan on getting water back into the tank? There's a lot that goes into a 210 reef setup. But here's my 2 cents....
Lighting, I like sps corals personally and so I go with more like 8 to 10 watts per gallon. how long is the tank? I would definately go with metal halide lighting! I used 400 watt iwasaki 20k bulbs on my tank and it had some pretty sweet color for greens and reds. a lot of people also use 10k's. 250 watt bulbs are good for tank depths of around 18 inches. Anything more than that go with 400 watt bulbs. Also, some actinic suppliment lighting from vho's would be good if you use 10k bulbs. 6700's are ok but I think they're too yellow. Also keep your bulb spacing to around every two feet.
As far as flow, as you saw in my setup, the rose definately enjoyed high water flow, but it also had times of no flow inbetween surges. I'd reccomend getting wavemakers. They're rotating powerheads that take water from your main pump and rotate it in the tank. creates a surging effect. Or if you want to get experimental do a surge device, but they cause a lot of salt buildup on the lighting. Don't bother using powerheads on a tank like that, they'll be useless. Use a large large pump like a dolphin or a mag drive. They push a lot of water and will be able to run your wavemakers and any other returns you have into the tank. Flow will be really important on a tank like that because if you don't have enough flow, deadspots will occur in the tank and that's where you get algae blooms and unhealthy corals.
As far as skimmers go, it's been a while since i shopped for a skimmer. Make sure you spend some good money on this to get a good quality skimmer.
I hope some of this helps.