Hey, i can admit when I got it wrong.
Get the 107 to cover yourself, or hire someone to do it. (Having spoken to both my area FSDO rep and a couple adjoining ones) but wish to point out two things:
1. It on occasion may come down to the specific FAA rep's perception and interpretation, you may be ok in the eyes of one rep, and not in the eyes of another, there are plenty of grey areas in other parts of flying besides what we're discussing here. (My second rep thought similar to me to begin with if a one time flight to get his own property)
2. There seems to be a lot of vicious debate at times over the rules here, and for those who come out of the woodwork to point out when an operation needs a 107 on occasion also seem to be the ones who defend flying beyond LOS, at night, and over clouds, where were the rules they wish to rely to beginners then?