Nice guide. I've just started a fire/fire scrapper myself, and your insights are helpful.
One quibble I have is that in the "leveling up" slotting recommendations seem a little low on accuracy, especially in Consume. If you're teaming with PuGs or doing missions on higher difficulty levels, I think slotting more than one ACC would help.
Also, fire/fire scraps can make good INF even at low levels by running around Perez Park toasting Hellions and selling their nice arcane salvage.
Thanks for the guide.