Hate to burst all your bubbles, but I think Overload has to much positive for a +4. I was thinking maybe +2 instead. The inability to be hit, and the x2 power increase while in this form makes it difficult to give any more. Just a Teen is good, since you will be facing a lot of things that the police can't handle, and they will be scary, and sometimes huge, so you can get +4 for that, but Traumaphobia only gets +2. Since while it is good, you have a chance of negating it as you start to lose, which considerably reduces it's negetivity, unlike Brick's Pyrophobia which is there, all the time. All fire, scary. And the Kakorrhaphiophobia isn't that terrible. Getting angry when you lose, as Shadows of Mordor teaches us, can be helpful, and the fact that it negates your bad trait means you get +2 from it. +2 is from the chance of killing someone, which will severely hamper RATS' reputation.
Aside from that, I agree with a lot of Eklipses suggestions about balancing your traits and working with your stats. But on the topic of points, a lot of your traits have multiples in them, so you need to chose two traits to get more than one active trait, and then buy off the rest at one point each.
Finally, there is no speed stat here. It's got no baring on the final ruling, so you might want to debuff the ATK, or DEF instead.
6 points to begin (4 for Balanced, 2 for magic cat)
-2(+4) for attack boost
-2(+2) for hp
-8(-6) for traits
-3(-9) for knife (Life Steal be stronk, yo)
-1(-10 for chalk (A strong 1, close to 2)
-1(-11) for herbs (Fairly utility, weak effects)
-2(-13) for book (Has some kick to it, status cure alone is like at least half a trait, so we'll give it to ya for 2)
Current Total: -13
Overflow: +2(-11)
Just a Teen: +4 (-7)
Traumatophobia: +2(-5)
Oops: Oy, +2(-3)
Silence: +1(-2)
Kakorrhaphiophobia +2 (0)