I don't know that area at all, but when we posted on this last, Sammy suggested the following as a meeting place:
"Jim, there is a big retail/restaurant area at US75 and Eldorado Pkwy, just west of your point at 121 and TX5. If folks leave US 75 at exit 39 (Eldorado), an immediate right from the offramp will dump them into the parking lot of Texas Roadhouse. I suggest the group gather on the north side of the restaurant. Depart east on Eldorado to intersect Hwy 5 ...
So, let's follow his suggestion and meet there between 8:30 and 9:00. Marge and I will leave our house around 7:30 or so and should be there close to 8:30.
Hope we can get a good turn out for this, it should be a good ride and a lot of fun!