I personally use the keypad for my heals:

1 - Renew main
2 - Flash main
3 - GHeal main
4 - Renew alt1
5 - Flash alt1
6 - GHeal alt1
7 - Renew alt2
8 - Flash alt2
9 - GHeal alt2
0 - PoM main
. - Pom alt1

etc.

That frees up the rest of the keyboard for crazy DPS