I found cast sequences help hugely here as ive used a paladin with my shamans to good advantage and had the whole thing mapped on about 7 keys.

here is roughly how i did it with my pala you could easily substute which ive show below

keys layout
1 - PULL (Pala: None till later, Druid: Moonfire)
something you consider doing is mapping back up to your pala's avenging shield at
higher level to auto disengage follow on your druid when your pala pulls, this leave you
free to run round on your pala.

2 - TAUNT(Righteous Defence, Druid: None) - hear you could do tell your druid to use roots on a target with a bid of fiddling

3 - MAIN ATTACK
pala cast sequence macro /castsequence reset=20/combat/target seal of righteousness, judgment,seal of righteousness, , ,
druid case squence mace /castsequence rest=20/combat/target , , moonfire, wrath, wrath, wrath
This is roughly done you many need to adjust the sequence slightly

4 - Concecration on PALADIN here i would possibly place monfire on my druid and take it out the cast sequence of my MAIN attack.

f1 = (DRUID)
/target <PALADIN>
/castsequence reset=10/combat rejuvenation, regrowth

f2 = (DRUID)
/target <SELF>
/castsequence reset=10/combat rejuvenation, regrowth

f3 = (DRUID) - this ones for healing others as its nice to be able to help others, gives us boxers a better name
/assist <PALADIN>
/castsequence reset=10/combat rejuvenation, regrowth

F4 = (DRUID) BUFF MY TARGET MACRO
/assist <PALADIN>
/castsequence reset = 10/target thorns, mark of the wild

anyway that should get you started pretty easly.

Hope that helps

a word of note once you get concecration it becomes daftly easy with this combo although maybe i would of gone with a warrior but i'm biased, reason i say a warrior is if you have a healer warriors really are non stop killing machines which never need to stop for a drink.