Your warm-up time is okay. When I was still figuring out the incline/speed combination for desired target HR, my warm-up was 30+ minutes. Most tests, I have seen warm-ups in 15-30 minute range. The test looks good based on the first half and second half numbers you posted.
Your HR at the start of the warm-up is 126, which seemed high. There might have been some other activity that resulted in this high heart rate or you started tracking HR a few minutes into the workout.