-Couple of points into MoF never hurts, to get fewer resists on your spells. -One point into WP to give your DDs a chance to crit. -Higher SoS is always appreciated, I'd suggest getting at least SoS 2. -AoM 5 or so is pretty good return on investment imo.
lw/tireless MoF 2 SoS 1 Serenity 1 Wild Power 1 Purge 2 AM 1 AoM 5 SoS 2 Empty Mind 1 AM+++
Roughly that progression has worked well for me. I specced out of Det and didn't find it as helpful on the non-stoicism class. I also have purge 3 now.
If you intend to solo instead of group I would just pop out AM for First Aid and build it higher before SoS2. IP down the road for both solo and group, but like R8 down the road.