Very minor point, but I recommend you use CA-4 at Stockton to cut across from I-5 to CA-99 instead of trying to do it at Sacramento.

To complete the thought:

The easiest way through DFW is to take TX-114 (freeway-quality) to the airport, go north on TX-121 for one exit, and get on I-635 east to US-80 (freeway-quality) east to TX-557 to I-20 east.
However, I would prefer to take US-380 east from Decatur to Denton, then I-35E to I-635 if you are there anywhere near rush hour. This also keeps you away from the DFW airport traffic.