Yes, 2 stacks for the shorter conflag, or you can supplement with pet CDs. You may need to sometimes use 2 stacks on a "longer" conflag due to a DPS getting conflag + another DPS getting FB and running in too early. In this case, you have 1 stack for a shorter and use pet CDs. Saving Enkindle for this phase, while you're still learning it, is important.
