I think it's the "approach other land salesmen/real estate agents in the area with the same deal" part that would get you in trouble. In essence, your advertising services, "same deal" for compensation.
Also, the flight purpose would not fall under the 'incidental' portion of 61.113(b)(2). The entire purpose of the flight is to survey so the whole reason is flying for compensation.
There wouldn't be much talking to the FAA, more like spending a LONG time trying to get your PPL certificate back after revocation.