Good attack strategy for TH5 (135 troop space)

I currently use 20 giants, 2 wizards and 27 archers (all troops max lvl for TH5)

Is there a better strategy? (using lvl2 thunder)

For war balloons work best at Th5. Check the Th6, Th5, Th4 - 3 star clan wars attacks link in my signature for relevant videos