Way too aggressive I'd say. Try to delete MissileEvenMore or at lest MissileMore and you can try change the amount of time while chasing.
It is a really interesting idea but limited in its usefulness, I would add an custom weak attack(?)
I'll remove Missile More, but the idea behind it is to aid other monsters, not attack on its own. It's not mean to be really versatile, but used near groups of enemies or a boss.
Now here's a question: I will try my best for sprites, but will it be better for a flying or ground monster?