Unless you're back-gearing a higher level toon or you have an 85 alt or a *group* with decent dps...this is a tedious long fight to do solo, and at the level where you may first obtain the spell it's neigh unto fatal for many classes to attempt even with a merc.
I think your time is better spent in a 50ish zone farming the paper needed to get someone to craft this spell, but that's just me.