Nice discussion bigbear and charles.
OP, as bigbear and charles have mentioned, "cardio", i.e. running, isn't necessary. If you want to get lean, keep your barbell training going strong and watch your carb and calories intake.
James 1:16-17 ESV
Do not be deceived, my beloved brothers. Every good gift and every perfect gift is from above, coming down from the Father of lights
With God's help...Mens sana in corpore sano