New to 5 boxing, and macros

Ok as the title says i'm new to 5 boxing and macroing. I have played wow for over 2 years now and pve and pvp have both become boring. The game in itself is too easy and i'm disliking depending on others to hold up their ends lately. This is something to breath new life into the game.

My rig:

Intel(R)Core(TM)2 Duo CPU E8500 @3.16Ghz 3.17 Ghz , 8 gig ram, vista 64bit, GeForce 8800 Ultra

I've spent the last day or two researching things and just started installing adjusting my system. Im using 5 wow directories, 1 machine and 2 monitors (1 main, 2 4 slaves) And Keyclone.

Im planning on starting with 5 shamans and going from there, I already have a 70 pally, priest, warlock to use as well when needed.

These are some macros ive sifted through and pulled out, I want to make sure they are working, optimal, and looking for other macros that may be important that I dont have covered.

/target [target=Party1, nodead, help, exists]; [target=Party2, nodead, help, exists]; [target=Party3, nodead, help, exists]; [target=Party4, nodead, help, exists]; [target=Brain, exists]
/follow


/invite toon1name
/invite toon2name
/invite toon3name
/invite toon4name
/invite toon5name
/ffa


/script AcceptGroup();
/script AcceptQuest();
/script AcceptTrade();
/script RetrieveCorpse();
/script AcceptResurrect();
/script ConfirmAcceptQuest();
/script StaticPopup_Hide("PARTY_INVITE");
/script RepopMe();
/script AcceptBattlefieldPort(1, 1)


/cast [target=targettarget, nodead, exists, harm][]Lightning Bolt; [target=targettarget, nodead, exists, help][]Lesser Healing Wave
is it possible to make a cast sequence of Chain lightning, lightning bolt, lightning bolt, while still keeping the utility of healing alive or would it be more viable to have 2 seperate macros, 1 for dps and 1 for healing.

/cast [dead,harm][party3,dead][party4,dead][party5,dead][party1,dead]Ancestral Sprirt
and on slave1
/cast [dead,harm][party1,dead][party5,dead][party4,dead][party3,dead]Ancestral Spirit
Etc..

PVE - totem macro, id accept usefull pvp ones as well

/cast sequence reset=15 Wrath of Air, Totem of Wrath, Healing Stream Totem, Stoneskin Totem
/cast sequence reset=15 Tranquil Air Totem, Totem of Wrath, Mana Spring Totem, Tremor Totem
/cast sequence reset=15 Grounding Totem, Totem of Wrath, Healing Stream Totem, Tremor Totem
/cast sequence reset=15 Grounding Totem, Totem of Wrath, Mana Spring Totem, Earthbind Totem
/cast sequence reset=15 Grounding Totem, Totem of Wrath, Mana Spring Totem, Earthbind Totem

/stopcasting
/run FlipCameraYaw(180)
/ (a button linked for forward movement for all toons)
/cast [target=targettarget, nodead, exists, harm][]Frostshock


looking for a cast sequence to rotate earth shock between my 5 shamans or would it be more usefull to have them all cast at once, using in an arena scenario vs single target.
(same for frost shock)

Seems Using Keyclones keymaps formations are possible:

One I found was (in the wiki)
Main -keypress = Z, keymap name = formation
Slave1 -keypress = UP, keymap name = formation
Slave2 -keypress = DOWN, keymap name = formation
Slave3 -keypress = LEFT, keymap name = formation
Slave4 -keypress = RIGHT, keymap name = formation

Any others any one cares to share?

Edited To add a small section on add ons:

The only one most people seemed agreed on is trinity bars 2 besides the norm omen, recount, deadlybossmods, outfitter, etc... any others that work really well with boxing play.