Should I be working out more?

Red_Raconteur
I am currently at my ideal weight and I want to maintain my weight and tone up a little, as well as lose a little fat from my stomach. I have a fat layer on my lower abdomen and I want it to be flat by summer.

I have TKD training three times a week for an hour to and hour and a half each time. TKD is a combination of cardio (sparring, self defense throwing and fighting) and strength (repetitive kicking and punching).

Once I week I take an intermediate level yoga class for an hour and a half. That's pretty much all strength.

Once a week I have a class called core bootcamp for an hour that is a mixture of cardio and strength and focuses mostly on core body muscles.

Is there anything else I should be doing? I'm kind of under the impression I need some more cardio if I want to lose my tummy fat. Should I go jogging as well?
Updates
+1 y
Ah, I forgot to mention my diet. I am a vegetarian (I get a lot of protein from other sources) and eat a lot of vegetables and whole grains. I use Livestrong.com to keep track of what I'm eating and normally stay within my set ranges for calories, fat grams, etc.
Should I be working out more?
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