In terms of contacting the attorney, I think that it is worthwhile to reach out to attorneys in the mix, with managed expectations.
You may not get the deal at hand, but if you are in it for the long haul, a sustained campaign can yield a reservoir of referral leads. In terms of differentiation, how about offering, with the attorney's permission, to take a photo of the estate home and share the photos with the attorney? Remind them that the estate does not want to get mired in code violations or deferred property maintenance issues.
In terms of singling out properties, diligent court research should bear out where the Personal Representative resides and their relationship to the deceased, and you can flag those PR's that live out of state, as there is more urgency to sell - they likely don't want to travel on their own dime to maintain a vacant home or play landlord.
From my experience, I would pay more careful attention to whether the PR is a spouse that lives under the same roof. The spouse seems to have more emotional attachment to the estate home than the children.