I note from the side bar that you don't seem to have a formal form of insulation. That being the case a simple CCF pad with a sleeping bag should do the trick. It really depends if you are a "warm" or "cold" sleeper.
If you're car camping, take a little extra just in case the CBS hits. You can always pull pads, vent UQs or wear less in the hammock should it get too warm for ya.
My personal experience is a properly vented (for me) UQ and I still use my 30* mummy bag as a TQ just to keep the damp chill off. YMMV.