#2 I believe God chose English as He foresaw the English language ready to explode on the scene and the English speaking world ready for harvest and would use the KJV to save millions and millions through all the way through the 20th century.
Why do you believe that? What if God foresaw the Chinese language to explode in 22nd century or Russian to explode in 20th century or Spanish to explode in 18th century?
If I understand you right, you are saying that KJV is not only for English speakers, but for all.
#3 As a maturing believer I was searching for a perfect Bible. I was getting tired of Pastor after Pastor correcting their Bibles and saying "this is a better way to say this verse." The Holy Spirit led me to study the different forms of manuscripts used for translation.
So how did your study of manuscripts led you to KJV and not to other English reformation translations? Textus receptus was used by many, not just KJV translators.
#4 There are not proved errors in the KJV, only alleged errors.
Why do you think that for example this error is not proved?
"Then sent Joseph, and called his father Jacob to him, and all his kindred, threescore and fifteen (75) souls."
(Acts 7:14)
"...all the souls of the house of Jacob, which came into Egypt, were threescore and ten (70)"
(Genesis 46:27)
Error in Genesis 46:27 is in massoretic source. Other sources has 75, which is the right number.