Too Much Volume??

If training a large bodypart followed by a small bodypart, how many sets per workout would be best for gaining mass? I was reading an article on the internet which recommended 3 / 4 exercises with 3 sets each for large bodyparts, then 2 / 3 exercises with 2 or 3 sets for smaller bodyparts.

I’m curious to know, would this volume be considered too high?

Depends on too many factors to answer. You need to find out whether it works for you or not.
Some do ten sets once a week and feel over-trained while others do 20 sets twice a week while feeling great.

Agreed…it depends on your age, ones particular recuperative abilities, how much sleep you get, how much stress you have on a day to day basis, what your diet is like. All this affects your recovery.