Yes, you are overthinking.It’s not that I don’t want to increase total Ppm, I guess it’s more that as an inexperienced grower, it’s difficult to know how much is too much and how much is too little, and then when problems do arise. If you make changes, it could be more complicated then just add X nutrient, you may need to make sure to reduce or exclude nutrient Y.
Or maybe I’m just overthinking it.
Keep it simple, and you'll have fewer problems.
Right now in DWC my ppm is 450, which is about 400 MC and 50 CalMag.
Slowly going above that started nute burn (orange leaf tips, clawing) , so I backed off.
There are two things to watch out for when not overfeeding:
Be on the lookout for CalMag need.
If leaves start getting light green, increase feed.