Please help me define custom HR zones

I'm trying to find the right settings for HR zones in Connect for running and for training programmes, but am uncertain which settings to use. I have a very unusual suspected maxHR but can't test it to anywhere near the max due to a muscle condition. I do have values for VT1 and VT2 though from a CPET, and some guesses. CPET was aborted way before I felt I was done. I have no lactic thresholds, but only ventilatory thresholds.

VT1: around 161bpm - from CPET and breathing/running changes from here on. Though the change might also be due to a blood pooling issue resolving that bugs me when I start exercising. For some reason I can't run below this value apart from very short moment when I'm extremely fit. Pretty much all running happens above this and up to VT2. Though cycling and hiking usually sits below this.

VT2: around 180bpm - from CPET, and breathing changes from regular with a 3/3 rhythm to chaotic, 2/2 rhythm. Past this point my running is quickly over due to my muscles giving up and I'm running out of air.

Resting HR: on most days around 49-52

MaxHR is more difficult to say, but a few years ago I did a few maxHR attempts on spinning bikes and got to 201bpm. That was before my actual max due to muscles giving up after about 90 seconds giving everything. Each attempt was supposed to take 3 minutes. Go figure. I once saw an HR of 204 while power walking against a massive storm. I currently keep it at 209, but have no idea how correct this is. I'm 47, btw. Thus 220-age doesn't work at all for me.

If I set training zone 5 from 180 then it seems that Connect is still not counting everything above an anaerobic, though it does feel very anaerobic to me. How would you set the zones in this case? Make them depend on % of Max or lactate threshold?