I have the same classes as well. I leveled up in the Forsaken area to start and eventually moved to Barrens etc... I didn't bother training my druid until it was convenient. It's really not a big deal since it's so easy with a group.

From 1-60 I had few macros. I used Healbot for healing since I have two computers and you rarely need to heal anyway.

Besides the basic /follow (I switched to Jamba a while back) and /assist macros, each toon has a DPS macro tied to a single key. That's about it. Almost all of the macros use /castrandom with the core spells (this changed as I started doing instances and gained spells etc..). I also have my trinkets in this macro since I figured I might as well just use them all the time.

I use the Smartbuff add-on as well. It's great. I have it bound to a hotkey and it's part of my /follow macro. So, every time I hit follow, I get buffed when needed.

When you start to do instances, this is where things need to change. I added healing macros for each of my characters, totem macro (dont bother with totems while I level usually), additional DPS macros (to separate some stuff out) and a bunch of utility macros like sheep, shackle, ensnare, fear, aoe, etc.. Most of that is bound to my G keys on my Logitech G11. As you level up, you will probably figure out a lot on your own.

I am still tweaking and will likely add more functionality when I spend more time doing instances. The Northrend instances have been challenging for me and I know I need to redo a lot of my setup.

I'd recommend using Jamba and Smartbuff to start. Those are my "can't live without" add-ons for multiboxing.