Question for all w/6ft 200gal and up tanks

[Skimmin]

I'm still in the set up stage with my tank (210gal 72 x 24w x 28 tall, w/60gal sump) and stuck on two major components. Flow and lighting. First I'll start by mentioning that the 'plan' for the tank, is that it will be predominantly a softy/lps tank with only a few sps specimens. My goal is to have some larger fish so I'm gonna try to keep the rock work open and have lots of swimming space. (I'll probably try to go with an 'arches and pillars' rock structure) The tank has two rear corner internal overflows and has not been drilled or designed for a drilled closed loop set up(and I don't want to take the chance of getting it drilled). I do have a Dart and was thinking I might try an 'up and over' closed loop with a flow device like a squid or something but I'm not sure if that's a good idea or not. Not only that, but in relation to powerheads the Dart uses a fair bit of power. So the only other option I can think of is powerheads. Now to powerheads?... I'm kinda stuck because I have an MP 20 right now on a smaller tank and I've had no problems with it whatsoever. From what I've been told I'll probably replacing the wet side approx once a year on the MP 40 so, on a large tank I'm assuming I would probably want 3 or 4 mp 40's and replacing the wet side on all of them once a year will get kind of costly. The other option I've seen is the Tunze and besides being a bit on the bulky side I believe they're a good product but I have really no experience with them. For lighting I was wondering if you would mind posting some pictures so I can see what different options look like. (maybe... t5, halide, t5 and halide, etc...). So that's my little dilema... If no pics are available that cool too. Just tell me what you think from your lighting and flow experiences.

Thanks for your time