Yes the Celestial Kingdom is the Highest Heaven where God dwells.
So let’s see ...your Idea is that God is an incomprehensible being who has such a big ego need that he created the earth/mankind so that you can spend eternity singing praises to him!
....The God you define has about the same need for acclaim that Donald Trump does.
Not incomprehnsible at all and not his ego, but our pleasure to praise Him eternally.
And the CK equalls godhood. You left that part out. You lying for the lord again, Teppe?
odhood
See Eternal Life; Exaltation; Man, Men—Man, potential to become like Heavenly Father
https://www.lds.org/scriptures/gs/godhood?lang=eng
How much straw did you use for this?
your Idea is that God is an incomprehensible being
I have no issue with God at some level being incomprehensible to us. He would be a pretty feeble God if human intellect could fully comprehend Him. I am confident that He has provided us all we need to know about Him but there are probably limits on what the finite can understand about the infinite. I don't find that a problem at all, in fact, it makes me want to praise Him even more as I realize that His greatness and loving kindness is beyond my comprehension.
Concerning your criticism of creeds: The orthodox view of creedal statements is that they are summary statements which have value only when they align with Scripture (Christian Scripture not LDS "scripture"). Most Christians would hold that the Apostle's Creed and the Nicene Creed meet that standard. Other creedal and confessional statements have less wide-spread acceptance. However, there is often edifying material in them but personally, I tend to hold to these loosely.