I suppose I'm training to gain muscle but only for the purpose of burning fat. The Idea being that I'm trying to cut down to my more natural physique, not that being a little buffer for summer would be out of the question

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I'm not sure what your criteria is for a "light intensity workout to attack fat" is, but yes I'm working all the major muscle groups, doing 3 sets each exercise with several exercises for each muscle group (i.e. bench press AND incline press or Crunches on a ball AND Seated Weighted Twists AND Pilates-type stuff.)
I do 6-8 reps till failure on the first two sets, then burnout on the last.
So far I've put 3 days of rest before working out a muscle group again, and usually alternate between legs/abs and chest/back/shoulders/arms on workout days.
I've been doing 20 minutes of cardio per workout, but plan to notch it up pending some more information.
Hope that helps clarify things,
Thanks,
Keith