A good way to work though your deck faster would be to play cards that allow you to scry.
Magma jet,
titan's strength,
battlewise valor, god's willing,
spark jolt,
bolt of keranos,
lightning javelin, and
spite of mogis would all be worth having since they let you scry and even
deal damage as well.
Also personally I'd remove the cards that
deal damage to you as well as your opponent. If you want a fast and hard hitting deck focus on THEM as the target not yourself included. Also if you utilize the battalion effect of the boros creatures and actually use some of their spells for your deck then it should work out in your favor. Really just look at your commander's effects and ask yourself; What cards can I put into this deck to make my commander's effect trigger the most? It's a good start to a strong deck. Also Boros is great as far as creatures go, you just need to pick the right ones for the particular deck you're playing.