Army Composition?

Hello. I am part new to clash of clans, i started about 4 weeks before i posted this. I am a TownHall 5, and about to become 6. Before, in the th4 range, my main army would be a barb rush. But now that more walls and defenses are coming in, splash damage can easily destroy them. So, i have 105 army slots,3 barracks, and my top barrack is level 7 with wizards. I also have level 2 lightning spell. My troops levels are:
Giant Level 2
Barb level 3
Archer level 3
Lightning level 2
Goblin level 2

So, what should i train? Also i can soon upgrade one troop again, im thinking wizard because i need a higher barrack to do the barbs, or archers, or giants. Tell me in the comments what you guys think.:confused: