What principles do you have that make you spend 5 times more time on battles?
I believe that we should play using the tools provided by the game developers. Otherwise, we might reach extremes, such as "a winning strategy has been found, so there's no need to play the battle; let the plugin do everything for us."
Also, misclicks are much more likely during fast battles, especially over a long distance. Few people are capable of clicking in the same sequence without making mistakes thousands of times.