New To MultiBoxing

I have just recently decided that I wanted to take up multiboxing in Aion. I have not done any multiboxing before, but it seemed like a lot of fun. I have everything set up to run 2 copies of the game currently. Everything seems to work right, but I am having some issues with getting the flow of the hot keys down. Currently I have created a mage and a priest (lvl 7). I have created macros to follow, assist, and then attack/heal. The problem is that because these skills all have different cast times I am having troubles keeping things going. As an example I am playing the mage as my main. I target a mob and press my assist key the priest also targets the mob. I then begin to attack. I start my mage casting fireball (key 2) then have the priest cast smite (key ctrl+2). All is good so far then the mage pulls aggro and starts to take damage I want to heal (key ctrl+0), but I still need to keep my mage casting (key 2).

I guess what I am asking for is some advice on what to bind where. I have looked at the wiki and some of the other tutorials, and they helped a little (ie follow to g and assist to t), but I need a little more. Any help would be greatly appreciated.

Thank you

just put the dps skills on the same key as the healing, for instance

1 : fireball on mage, smite on priest
2: fireball on mage, heal on priest

spam 1; and when low on health, switch to 2, etc...

Ok I will try that. I don't know why I did not think of that.

Thank you!