Fun, I've been wanting to construct something like this, but since I've already got two R/W decks I've not gotten around to it. A few budget suggestions to address a few weak spots: Drop
Myriad Landscape for
Battlefield Forge, it will be faster and the life loss won't do much to you. Add some stuff that hits all players, like
Price of Progress, or
Acidic Soil. Some cheap 2 drop mana rocks like
Boros Signet or Felwar Stone would improve your curve, and give you some much needed mana. Card draw is a bit limited for R/W, but
Gift of Estates,
Light up the Stage, and
Well of Lost Dreams all seem like good fits. Finally, a finisher like
Aetherflux Reservoir would allow you to close out games.