I partly disagree about keeping the boundary too tight. Mixed-use sales can be sparse, so a tiny area may leave one unusual building setting the apparent market. Use a close group and a wider Montreal group side by side. The wider group won’t set the price, but it can show whether 118 days is...
We have received an early offer of around C$1,519,000 on our Toronto property, and the listing agent has said they can also work with the buyer. A quick deal is appealing, but I do not understand how the agent could protect our confidential information or negotiate independently for both sides...
A practical next step is to score only the evidence you already decided was relevant, then compare the leading applicants without adding new hurdles for one person. Separately calculate another week of vacancy against the plausible cost of choosing badly and turning the property over again...