Pump advice

[nikkichick]

210 gallon (new setup) dual overflows (Aqueon tank) Allglass Megaflow #4 sump in stand. I plan for SPS/LPS/Fish.

My concerns are Noise, power consumption, and enough flow are all concerns.

Went to J&L (LFS) to buy Reeflo Dart pump and saw that the Barracuda was only $50 more. They advised me to get the Barracuda to be sure I had enough flow.

I got it home, and now I'm concerned because the 2 overflows are rated for 600GPH each, totaling 1200GPH drainage. The Barracuda will push 3500GPH at my 5ft head height. I realize I can reduce the flow with a ball valve, but if I don't will this cause overflowing? Am I waisting my money/power buying more GPH that I need?

In the return plumbing there will be a single "Y" and 2 x 90 degree angles. Drains are 1" returns are 3/4" each. Input and output on Barracuda are both 1.5".

I do want my pump to be powerful enough as I want to eliminate powerheads, but have lots of flow from the returns.

LFS advised that the Dart would be the "minimum" I would want to use. I have looked around online and found plenty of people who seem to be fine with the Dart in this size of tank.

Any comments? Advice?
Anyone have the Barracuda on a 210 or smaller? How is it?
Let me know please.

Nikkichick