Yeah, I think you have a problem there...I live in Tampa, so temps get a tad bit hotter than what you see...but before I was turbo, I'd still see 220 driving around.

I noticed yesterday I was slightly above 220 on the highway going a sustained 70-80mph at 85 degrees, I take it this is normal and I dont need a cooler??

220 is perfect. You do not need a cooler.

For OP auto-x you'll hit 240, occasionally 260 on a long course but just for a minute. It cools down quick when you come back in to staging. Turn the A/C on to kick on the extra cooling fan while you sit there.

Turning the heater on will pull some heat out from under the hood also

wow cranking heat in the middle of summer in 2011, thats hardcore

AC off, temp turn to full hot. That's the only way I get by if I'm stuck in traffic. Otherwise, the coolant/oil temps shoot up.

All I did was put the car on ramps and removed the whole under tray. With that off, I was able to have full access to everything and I was able to even flip my front damper. Not sure if there is a huge difference between Nismo bumper and non Nismo bumpers but clearance was no issue mounting the oil cooler and bracket.