I-30 thru Dallas is never a good choice. Coming toward Dallas on I-30 take I-635 south to I-20, then I-20 west across the southern outskirts of Dallas and Ft Worth. Bypasses the worst parts of the whole metroplex.
I live just off of US 380. All newly rebuilt highway from Greenville to Denton, then a couple miles of older narrower 4 lane thru Denton. From Denton to Decatur they are rebuilding that highway. Lot of construction but really does not affect traffic flow much. Only problem with the route is traffic and traffic lights from east side of McKinney to Denton. 40 or more traffic lights in that 35 miles or so. About the time you get up to speed you hit another red light.
Knowing this area well I would take the I-30/I-635/I-20 route and do it on a weekend or between 10 am and 3 pm on a weekday.
