So now I am lvl 21 (got shaman's lesser healing wave yeah)

I cant rly use buttons since I think thats only if u using ISboxer (for repeated regions) and I am using keyclone right now.
my healing right now more or less option 2):

E
all shamans stop casting and lesser heal paladin

F1
click macro rotating healing wave from one of the shamans to paladin.

It works ok for now, the biggest problem is how to reset the F1 macro. I was tinkling of not having a reset function, but that might off set the healing rotations. right now I have it reset on combat which means that most of the time the healing is done by one shaman, and that drains my mana.

Mouseover I think that will be effective as well. I remember there was a discussion about setting the same group order to slaves as it is to the master( so player is not necessary always on top of group). But for some reason i cant find the posting on that, i think it was an addon that can do that. I don't quite see how to connect the dsp macro to the mouseover heal macro tho