The CPU you're running has a power draw of nearly 70w. That's CPU ONLY, and doesn't include anything else drawing from the 12v rail (motherboard, full-size HDD, video card, full-sized optical drive, LCD possibly).
The Opus 150w supplies only 60w on the 12v rail. You will be overloading it and the 150w Opus will not work with your setup.
If you're going to be dropping cash on a PSU, I recommend the DSATX with the brainstem (an additional $10). It is far more customizable than any of the Opus offerings and the developer is an active member of these forums, providing top-notch support.
I'm not slamming any of the OPus products. They are certainly quality pieces. However, for the money, I think the DSATX is a better value, even if the output rating is a bit lower.
Also, if you purchase an Opus PSU or the DSATX, you don't need a seperate startup/shutdown controller. These PSUs have the SSDC built-in.
Wanting to get it right the first time is always a good idea.