I'm playing with different setups now.
Long story short - there are limited good options if you want a QD suppressor. You need a suppressor compatible with the Gemtech 3-lug mount (not sure if Dead Air is), as that's the narrowest currently produced mount on the market. That mount WILL fit with the factory Surefire 328LMF (or the 3v drop-in head added), but the light housing will press against the mount and will exert downward pressure on the (relatively fragile) pin holes on the handguard. The Surefire LM1B has a 1.16" OD head.
You can also buy a Malkoff drop-in head, as those are 1.03" in OD, but you still need the Gemtech 3-lug mount. The Malkoff drop-in head is the cheapest and easiest option, but again - you need the Gemtech mount if you want to use QD.
You can ALSO direct thread the Wolfman against the threaded SP5 barrel and use the 3V head, which is probably the easiest.