My wrist is 18 cm (7,08 inches), I have owned a beautiful 36 mm RO for twenty years, I have enjoyed it a lot, and I liked it on my wrist, but by today standards, and your wrist being larger than mine, I wouldn't recommend it to you. If it's possible, get ...
I have a slim 6.3” wrist and my 36mm 14790ST is just nice for me. A friend of mine with a 39mm 15202 and a 7” wrist tried mine and gosh it looked too small. With your even bigger 7.5” wrist the 36mm RO would be too small.