to cardio or not to cardio...?

Hey yall newbie lurker here.
Anyway I've just got back into working out again after taking hmm.. 5-6 months off ...
3 weeks ago I was 150llbs
now I am 165-167 varies.
I'm about 5'11.5".
Supliments consists of:
Creatine, Whey, and Glutamine (all purchased from Schwartz )
I work out 6 days a week. Each body part every other day.
Question is this.. should I throw in the cardio? Or should I wait till I've gained more weight. My bf is 8% by caliper, and err.. only 4 packs can be seen on my stomach lol... but it'd be nice to have a 6 pack like presser.. damn bro I freaking idolize you, you ripped mofo.

Thanks for your expertises.

That depends on your goals bro. If you want to be bigger, don't bother with more than say 1 cardio session a week...and I say that just for overall cardio health. If you want to be more defined and don't care about your size, then knock yourself out with the cardio.