The only time I played Olympic Lake I shot +/- 75. I was a 5-6 hcp at the time. I did play relatively well, for me, and was incented to do so by my opponent, who was shooting +/- 73. That being said, I never felt that disaster loomed on the course. When I hit bad shots I recovered OK, and I never felt like any shot I was faced with was beyond my capability.
I could easily see myself shooting in the mid-high 80's on that course as it was set up that day, and maybe struggling to stay in double digits from the tips under Open conditions, but the course is not at all impossible, and very much enjoyable, IMHO.