What do you think of adding this extra brace for windy locations, like me in Colorado? This looks like it will work with your mount.
40" is a long mast. you might consider some braces on that. with high winds you could have a problem w torque or excess pressure on the mount. just search for sat braces on amazon. I got these and there worked well>>good luck.
https://www.amazon.com/gp/product/B07W7M5FJD/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1