I played McCord today form the shorts with a couple of other players. We are all rated between 800 and 850, and we all shot even or +1, so I think the DGCR SSE of 44.5 from the shorts is probably pretty accurate. The tee sign distances are off on some holes, sometimes by a couple of hundred feet, but they still made the course pretty easy to navigate.
The course was difficult to find from the address and directions. Just go the the address and then pull into the Racetrak parking lot. As you exit onto the side road from that parking lot, just go straight across into the McCord park parking lot. It kind of looks like you are pulling into an apartment complex, but don't let that fool you.
The drainage at this course is not the best. I overheard some parents at the park playground saying it was a swamp. There are some obvious efforts going on regarding planting trees and sod. Expect that farm fresh manure odor.
The shorts layout is one of the easiest in the DFW area. I've scored better at Paschal, ACM, UT Dallas, and Cherry Creek red tees, but that's about it. However, I think the creek makes this course not the best for new players. I found the lines were also very difficult. The tees and pin positions were almost always placed to either put trees in the natural line or put OB next to the pin, or both. In short, this is a technical layout for experienced players. It's not a course for encouraging first time players.