A Balanced Amount of Leagues?

Hey, I was wondering, with people posting all these wonderkids and fantastic staff I would try to acquire some of them.

But when I search hardly ANY of them are appearing in my Search Results.

I wan't to know if I should add ALL leagues instead of just 4/6.

Here is my Computer Specs.

-Acer Aspire Laptop - 6935G

-Intel Core Duo 2 Processor T6400

(2.0GHz, 800MHz FSB, 2MB L2 Cache)

-Up to 2303MB NVIDIA GeForce 9600M (With Fully Updated Drivers)

GT TurboCache

-4GB DDR3

-320GB HDD

So, What leagues should I add for good amounts of Players/Staff and Good Gameplay.

I run 24 leagues from 6 countries with a laptop with worse specs than yours. I cant comment on if it is "slow" as I've always had it like this.

Just so you know, if the players you're looking for are newgens in other people's games, they wont be in yours, or at least, they wont be the same player.