So, I plan to play starcraft 2 heart of the swarm, but I have a noob question :

As a zerg, what are the optimal hotkeys to use for the army and buildings ?

So far I have :

1 = close range units
2 = long range/projectile units
3 = special units
4 = air units

5 = 1st hatch
6 = 2nd hatch
7 = 3rd hatch

8 = 3rd queen
9 = 2nd queen
0 = 1st queen

is it any good ? How can i improve these hotkeys ?