Using Karsten's Calculator optimal land count is 32.6849
I was right on the money for this deck's land count! I'm really hoping that
[[Bria, Riptide Rogue]] isn't ungodly expensive, I'm not predicting that a prowess commander is going to hold a lot of value especially because it's not copying spells or whatever, so an Izzet beatdown deck seems like a suboptimal choice in comparison to other Red/Blue commanders.