Hey thanks jivodeiga. Not matter how long I do this, there's always something new or something I didn't know. This might explain a client a year ago always getting poor relevancy: they may have been telling the bot not to visit.
> Now, I am sorting all keywords which have lower ad positions and bidding high on them to gain top ad position also making sure those keywords are having QS >=4.
As I mentioned, I would not do this until your QS was 7 or more. You do want the top positions but not if it doubles your costs which a QS of 4 will likely do, whether you bid manually or not. Get that QS up first, even if near the bottom of the first page.