I drive 176 between Carlsbad and Eunice every couple of weeks. The 10 miles on the West end was just rebuilt within the last year and is in great shape. The 10 miles on the Eastern end to Eunice is also a good road. The biggest problem is the middle 10 miles or so that is not in very good condition and some spots have zero shoulder. On the positive side, with the oilfield situation so depressed there is much less truck traffic.
The extra few miles through Hobbs is not a real issue if you are concerned about the two lane with no shoulders.
Let me know if you have any specific questions and I will try to help.
Terry