Well, let’s not forget that the vertical scale on those diagrams is much exaggerated. The actuall bulge/curvature is just under 530 meters over the distance of 160-odd kilometers. Here’s another view of that:
where the vertical scale is less exaggerated.
So, you’re going to have to factor in this tropo stuff as Andy suggests, and with a couple of decent antennas at both ends, and a bit of extra height (try some Gary Glitter platforms - I’m sure Tom @M1EYP could loan you a pair), you should manage the link OK. 