With conflag glyphed, it can be cast immediately after immolate. So, start with immolate and keep it up, cast conflag and chaos bolt whenever they are up, and fill with incinerate. This has resulted in the best dps performance relative to other lock spell orders I've tried. Unfortunately, I haven't been satisfied with one-button spam macros in an attempt to do this, since a little lag has a huge impact in non instant-cast castsequences. Any one have thoughts or input on this?