[HamWAN PSDR] Best WLAN protocol for PtP link

Hello, I'm am seeking advice, experience and expertise concerning wlan protocols on a Point-to-Point link. I am establishing a 20MHz-wide PtP link under Part 15 rules. Only two stations are involved. It is NOT Point-to-Multipoint. This link will be encrypted. Based upon some scanning of the likely spectrum to be used, I expect a pretty clean channel. Question: Do I use NV2, the protocol used on all HamWAN APs, or some 802.11 variant? If this topic is too far from general PSDR interest, please respond off-list. Thanks for any help. RobK7QJ