I can say this won't do well at a Grand Prix. Most players there are playing with tier 1 decks, and as such, I would advise looking up the top RDW lists either on TCG or SCG and just go with those.
But just taking a quick glance at things, I'm seeing several sub-optimal creatures. For instance, Firefist Striker is just better than Bomber Corps, Goblin Shortcutter, and Riot Piker. You could easily slide Burning-Tree Emissary in here to help beef up the board presence on T2. Additionally, you only have four one-drops. Where are the Rakdos Cacklers, Foundry Street Denizens, and other one-drops?
Having said all of that, I would suggest trying to figure out post-rotation plans as both Goblin Arsonist and Lightning Mauler are rotating. Rotation hits in two weeks and Theros has been fully spoiled, so it's worth a go to figure out what you're doing.