That is great that you have family in the business....sorry I didn't know that before my last post. As far as a checklist, I don't think BP has one (or at least that I have found) but if you search for it on BP I have seen posts on what to look for. Personally, I would look first at the larger (and more expensive) items like the roof (you mentioned it was newer), HVAC, electrical, plumbing, drainage around the house and any signs of settling.
The only one I can speak intelligently about this the drainage because I am a Civil Engineer. It is very important that all water from downspouts and the grade around the house slopes away from the home. Hopefully, the grade drops 1' vertical in the first 10 horizontal feet around the house on all non-hard (concrete) surfaces. Obviously, concrete walks or patios will not slope that much but a good 2% slope is what I look for.
Spent some time in FL but never looked for property so not exactly sure if this is the standard there.
Good Luck!