would this be enough?

I dont like the kits... the cable isnt really that good. If the car is a street car with things like fans, HID lighting, big amp alternators, etc., I make the cables out of 0/1 or 2 welders cable, and I run a negative all the way to the back of the head. You will also need the cutoff switch to make it legal to race. And adding that switch uses a little more cable up (it goes on the positive side)