Hi veloriderkm,
well, assuming the lab has set your thresholds correctly, the short answer is yes. But there is a lot more to it than just the two-line advice for being successful at a race.
According to the lab results, your aerobic threshold (AeT, VT1, LT1) is at 79% of your HRmax or 89%FTP. Staying below AeT (<79%HRmax or <89%FTP) means you can go for many hours, maybe the whole day without fatigeing. On the other hand, riding near your anaerobic threshold (AnT, VT2, LT2) means you will be able to hold that pace for only 45min, maybe up to 75min depending on how well developed your fatigue resistance (lactate tolerance) is.
The value of a lab test is that you DETERMINE what your thresholds are, whereas an FTP-Test (20min, 8min, TR-Ramptest) only gives you an estimate of your AnT. And there are no reliable tests for AeT besides the lab test. In fact, the AeT (VT1, LT1) is the more important threshold for endurance athletes.
The lab test just tells you what your thresholds are, but not what your weakness and limiters are. You need to know these, in order to address them with appropriate training.
If the VO2 & Lactate test were done in one session, then it is strange that you have two different heart rates (150 and 157 bpm) at AnT (both 280W).
You seem to have a well developed aerobic base, your AeT is (relative to your AnT) quite high, only 30W below your AnT. You are saying, you can ride in the high 160bpm for a long while. If that „long while“ is near 75min, than you may also have a well developed fatigue resistance.
„but if I let it rise into the 180’s, it’s hard to know how long I can last “ At 180bpm you are near your HRmax, or VO2max, so you should not be able to hold this pace for longer than 8-10min. If you are using Golden Cheetah or WKO4, look at your PDC (power duration curve), there you can see how long you can hold a certain power.
I am curious, but what FTP value did you get from that 20-min test ?