What do you plan to keep?
FYI - EACH 1.25" will be good for around 11-1200 GPH... Flow through your sump is subjective. I only have a single 1" on my 135 which restricts me to <600GPH through my sump, but my total system flow including Seio's, Tunze, and closed loops is pretty close to 7000 gph WITH a sandbed... my 72 and refuge use the same sump, so I actually have close to 1100 gph flowing through it... just <600 from my 135... 
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135G Mixed Reef. Bullet 2, 25 gal refugium, 2 X250W MH + 4X 96W PC\'s, DIY Calcium Reactor, Coralife 1/6 HP Chiller, Phosban, Tunze, 2 closed loops & SQWD\'s, Seios, Coralife 4 stage RO/DI & a bunch of other expensive gadgets... I may never retire, but I'm gonnahavahelluvanaquarium!
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