You have to learn the original languages if you are going to read in the original languages, there are no shortcuts.
And that doesn't resolve your problem since you have to be able to read well enough to grasp the subtile idioms in each language.
There is also the issue of differences between texts, even among the Receptus text there are slight differences.
God has given you a Bible in English, so you would not have to deal with these issues which are distractions from living a Christian life.
God raised up men to translate the King James Bible who had all the ablilities to make those decisions and gave us a perfect work that we can trust is God's words in our own language.
I understand your point - but what then is there to say he didn't raise up men to do the NASB or NIV (I prefer NASB btw over the NIV...)
The KJV
is NOT perfect.
It's wonderful, but NOT perfect.
Teaching otherwise is a mistatement of fact--wholesale.