^ this is completely wrong. Moving to TH9 and getting the queen will easily bump you up above other th8s in your clan. I did the exact thing you are talking about on a mini because I wanted a second account for donations. My war base went from number 12 to number 6 soon as I hit 9 and got the queen.
As a plus you get lvl 6 balloons and you should be able to do really well in wars after that.
As a side note maybe I would try to get lvl 4 minions before I went to TH9 cause they are important for the extra dps in wars.

