Good day man. Quite a thoughtful question. A combination of these three is very important in anyone's life. But going by your question and if I'm to pick one ahead, I will go for the wisdom as I believe it stands a little bit ahead of the rest.
The scripture says wisdom is the principal Proverbs 4:7. This attribute offers certain form of direction and I believe we all need that in anything we do in this life.
Other two are also quite good but without wisdom, knowledge and understanding only matter little. The other two seems useless and fruitless in certain situations. This is the reason you see certain men of understanding and knowledge gets into certain situation that is beyond their control because they lack wisdom to act at the right time.
Life is not about knowing and understanding , it about acting and been in the right place at the right time, acting in certain manner at the appropriate time. Basically doing things at the right time.
In reality all are good at the appropriate measure, to avoid any imbalance. If I am to rank them, wisdom First, understanding comes second and then knowledge.
i am highly amazed with your comment to this question, i really love it, life 8s not only about knowing things but know what to do, where to be and acting at the right time
this answer is wonder i dont think this very answer can cause imbalance it is highly acceptable
wow you have said it all especially with the bible verse you use to back up your comment.
this is a good and challenging question and i think this is the beauty of this platform.