Back when i was younger, I used to play Tennis. It's defo not the same kind of sport, but I remember there were all types of kids. The ones that were naturally better then the rest and had to be paired with each other, the ones that were inconsistent and had to be followed carefully, the goofy/distracted ones...
What I mean is, it won't be homogeneous, you will have to adapt, pay attention to all of them in general but never neglecting anyone in particular. Lots of patience is what i recommend, but I know how good u are with kids, so as soon as u create a bound with them, i'm sure you'll be the best coach ever!
Good luck :)