Here is one possible map for the Meridian Cruise.
I have not driven all of these roads, but from a birdseye view it looks pretty good. TxDOT website makes no mention of construction on this route.
A few highlights if we do as published:
Meridian BBQ Championship and Car Show (starts at 10am)
Overnight at White Bluff Resort
Loco Coyote Country Diner and BBQ in Glenrose
Some Hill Country Cruising
Visit to Motorsports Ranch
Surface Fossil Find at Benbrook Dam (everybody gets a keepsake, I guarantee it)
Shotgun Scramble Homeward bound from 35W & IH-20