Is there a way to know what specific height you need. I was taught you close your eye set your cheek weld than open if you need to adjust your position it's not in your natural position.
This is a good way, because you want to be comfortable. If approaching like this gets you comfortable, do it. This is about your feel and how it helps you shoot.
For the longest time. I kept reading about how it needs to be as close to the barrel as possible for all sorts of reasons, but the setup was usually uncomfortable to me. Some setups were still very hard to get behind and be that low. It would strain my neck and even my eyes as I tried are hard to get that low and find a good weld.
That all changed when I put 1.5” rings on my second Impact. From then on, I have said screw low rings and close to the barrel! It is so much more comfortable (at a bench) when I can have tall rings and be much more upright. That is what adjustable cheek tests are for too!
Who cares about appearance of closeness of the scope to the barrel? I have also never found that I run out of adjustment because of it either, as scopes nowadays are loaded with adjustment. Canted rails and mounts help with this too. The one time higher rings can be an issue is in prone. With your body changing its approach to the rifle, your setup is different and odder. If you plan for PRS (I haven’t) you may have to worry about some stages where you stick your rifle through holes, and may have to worry about a scope being too high (can’t speak from experience).
I like keeping spare rings for this purpose of trying out different heights. I stack sheets of paper on top of my rifle to lay the scope on, and add or remove sheets to get the height right. Then, I can measure the stack of paper to help me calculate the height rings I want.