Master X,
Cardio is not really going to break down muscle.
What it will do is burn calories.
If you burn too many calories, you won't gain weight.
You need to have a surplus of calories in order to gain weight.
Someone else posted this basic same question, they were 130 pounds and 5'8.
Here's a pretty good plan for gaining weight with your stats:
This is just a starting point, and it's the same plan as I posted for the other poster that weights 130 pounds. So this should also apply to you, or at least be really close.
Approx:
Calories: 2950
Protein: 180 grams
Carbs: 435 grams
Fat: 55 grams
I'd say you can eat what you want, as long as you hit those numbers pretty close or above.
I'm bulking right now (gaining weight) and following a similar nutritional plan, but taliored for my own stats:
Here's the first of one of my progres pics. (Taken on Monday 10/22)
Front:
Back:
