Yes, this is a more accurate gauge for sure.
My primary criticism for the KJV is that while it is a fine translation, the scholarship behind it is outdated since it hasn't been updated since 1769. The present day versions are better because of how they translate the text from top to bottom.
If you're going after the KJV based on antiquated language, I hope you don't ever read Shakespeare.
I am KJB only because I believe it is the only accurate version in English. I will admit it is more difficult to read than other versions, but I have found with study it can be understood. I rarely have any difficulty at all, but there are a few difficult verses for sure.
As for Shakespeare, we did study and read Shakespeare in High School, and I remember it was very difficult to follow, but again, with study it can be understood.
But again, my preference for the KJB has nothing to do with whether it is easier or more difficult to read, or whether it uses ancient English, although I do admit the old English sounds majestic, but I am KJBO because I believe it is an accurate version of the preserved word of God. I believe the Critical Text used for the Modern Versions is full of MANY errors and is not accurate.