The ShiftstonedEternal Power Calculator is a deck-building tool that visualizes your odds of drawing enough Influence and Power based specifically on the cards found in your deck.
Rakanos aggro or if aggros not your thing you could try going longer with Combrei and maybe splash another color with tokens/strangers (i'm thinking maybe Fire because you have a lot of kill spells in Fire). In limited I generally try to push aggro before I try to go late unless I have a really good finisher. I could also see FSJ if you want to be a little more ambitious with your influence or just FJ.