BTW, since you’re making a big deal about the use of older sales (necessitated due to the complete lack of current activity in that neighborhood), let me point something out:
I listed those sales in chronological order, the oldest sale being first. Usually I do it in reverse order on an appraisal report so as to demonstrate the trend in values, if there is one.
In looking at these three sales and when considering there has been no activity in this size range in the last 3 months, are these sales indicating to you that the market trends are still increasing in this area?