My wife and I have just started our search for a business (in Northern Ohio) and our guardrails are currently fairly wide. We're starting this way as we don't want to initially exclude a business we might not otherwise look at and our goal is that by looking at more than less, we get better at what questions to ask as well as data points to keep an eye out for.

Does anyone have any thoughts on how and when its best to narrow the search guardrails? Thanks, Bob