8 Hours a day is more than I can play most of the time, you can still glide into the top 5 just change around your build strategy, turtling is never the answer
Go with a lower hq level, and pump your stable up more than anything else in the beginning, it will help you keep a constant flow of lc, and buildings more easily. After that you can catch your axe up to a good level by upgrading your rax, and sacrificing some defense.
Effective farming is much more usefull than mass farming also, some people waste a lot of pressious time merely farming incorrectly. If your troops are not getting a complete haul everytime you may as well have left them at home. Often that seperates a top 50 player from reaching the top 10 in what I have seen.