Yeah that is the list.
I think it looks really fun and the use of rancor speaks to me.
Using RIP in the SB is nice but still hurts your lavaman which can be a problem, but i think i would just board them out then the RIPs go in.

Using Nobles would help, but you dont really want to use first turns mana on them instead of throwing out Nacatls or Guides. I am testing the ranger devil "combo" out, but the ranger could be diffiult to field without ramping (However exalted could be nice (if you dont wonna attack full throttle later on though). I used him before however which was nice, but it lacked power, since getting a lavaman or two or 2x guides at turn 5 most likely will be too late as bigger creatures are out to block by then. Fetching two vexing devils and either forcing the opponent to counter the them the next turn or take 8 damage would be brutal. Plus the 3+ power of attacking creatures you have at that time. So to me it looks a really strong late game tactic for the deck where it lacks some (if you are unlucky to get to a late game that is...)

About the Thunderous Wraths I am really torn as it is almost a completely dead card the entire game if you start draw it and you have no Brainstorm effects to help you with that later.. On the other hand 5 damage is really nice no matter what turn you play it on and can deal with Tombstalkers, most goyfs and knights.
The mana base on the deck is also annoying me a bit as could be difficult to cast white/green coloured spells after SBing if the opponent wastes you or you Fireblast your lands away.