Sanity check on 41km PTP link

Hi, New to the forum and we are planning our first connection. Hoping someone with actual experience can tell us if our basic strategy makes sense. We are going to set up a PTP link from mountaintop to mountain top, on repeater towers that are ~ 100ft high. The distance is 41km but there are no obstructions, not even trees, even within the 1st Fresnel zone. Equipment will be a NSM5 at each end. We've used the Airlink calculator to validate the path, and it says we'll have ~ -79 dBm signal with the NSM5 at full output and assuming the full 16 dBi antenna gain, with 25.35 Mbps throughput. The signal strength is well within the sensitivity of the NSM5, so assuming this is all correct we should be able to establish the link (our goal, btw the way is to achieve a min 10 Mbps throughput). Can we trust this result? We're going to dry run the setup on the ground, but it is a lot of work to get to the sites and climb the towers, so we're looking to have as much confidence in the deployment as possible before attempting this. I looked for forum postings that described the typical distances that are possible but was not able to locate anything relevant. Any feedback or links to relevant articles is appreciated. Thanks! 73, Rob KG7LMI
Yavapai County AZ Emergency Coordinator