Im jealous you have so many cards that I want for my boros deck which is kind of a fail due to lack of the right cards. I had to make it a mid range deck because I dont have the cards to really make it faster. Your deck is awesome if you get some time could you check out my deck and make recommendations and Ill see what I can do. Also feel free to be as critical as you want. Heres the link if you get some time http://www.mtgvault.com/ViewDeck.aspx?DeckID=289861.
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There is no question that once this deck gets going it will beatdown the opponent pretty bad. The problem is just getting going. I would recommend getting rid of maybe 8-10 of the big creatures because that will still leave you with 8-10 win conditions (keep in mind it is also possible for this deck to deal damage with your lower cost creatures). Add some early control/burn of your own so you on take a beating in the early game (I would recommend 4 lightning bolts). Also I might recommend goblin bushwhacker (yes this is actually awesome). Goblin Bushwhacker will work early or late game in this deck. Early game it will provide your creatures with a pump while adding speed to the deck and late game it will cheaply allow you to take advantage of your big creatures before they eat spot removal (if you dont know, goblin bushwhacker is a 1/1 for a red and has a kicker for 1 red that gives all your creatures +1/0 and gives them all haste til end of turn). Also since this isnt a super fast deck I might recommend swiftfoot boots to cheaply give creatures haste but mostly for giving your big creatures hexproof so they dont eat removal). Finally, I might suggest, if you can get any, try and find koth of the hammer which would work wonders in speeding this deck up and it is a win condition especially in mono red. Also try and cut to 60 cards.
The problem I see is speed. I love the moonveil dragons and geosurges but Im not a fan of having that many high cost creatures. I see this deck falling victim to control and spot removal as it has no responses of its own to control and isnt fast enough to beat out a good control deck before it can take control. I do agree that you need some big creatures but not 18 of them. Also if you do cast these big creatures you wont be able to use the firebreathing as effectively even if you do have a nice blocker they tend to eat spot removal before they can do real damage.