I don't think your deck is that bad. Okay, you don't have Lightning Storm, and that's sad. But you have 4 Bolts and 3 Unbounds. Your curve is pretty low, a little lower than you'd like, but that's okay because you have lots of good Overload cards. Although more 4s and 2s would be nicer, the difference between a 2 drop and a 3 drop is pretty small, and you have enough overload that 4 drops are a bit less important (it's less likely you'll actually have 4 mana on turn 4)
I do think Feral Spirit > Lava Burst for last pick, comboes better with Bloodlust and Dire Wolf. I also think War Golem > Ironforge Rifleman, I've never liked Rifleman that much because it's not really a 3 drop. It's a card that costs 3 which you play on something like turn 5, because it trades very badly by itself. It's still a playable deck, I'm not sure if it'll be able to deal with decks with lots of board clear, but anyone else is okay.