Dear Sir's,

I think to start my multiboxer's life (to finish my real life hehe..)
I can afford pc upgrade & +4 wow accounts. But ofc I have few questions..

Situation:
1 account with 10 characters(70-80 all) so I don't need to give levels to someone here.
2,3,4,5 - new accounts(will be created soon).

I need to boost 2 teams (etc 4 sham & 4 dru) from 0 to 80 on 2,3,4,5 accounts (1 sham & 1 dru per acc) for fun.
And I need to boost 2-4 teams of easiest _ class _ to _ boost from 0 to 68 for professions. (2-4 character per account) 2,3,4,5 accounts.

1. WoW system "Invite a friend": how to link all this account's to create a chain to give maximum of "free" level to my toons? (and max x3 exp)
For example: From 1 account send invitation to 2, form 2 ->3 >4 >5. Pls explain why.. if it's possible.

2. I will boost my toons using 80 DK tank(only instances, no questing). What spec is preferred for boosting? (Unholy = lots of aoe.. but mob's died before i can hit them second time to spread diseases :(( ) Glyphs?.. If there specific topic - pls link :)

3. Which class is easiest to boost? I think spd druid(restore 0-68, then boomking/restor). (they can heal & res :))) ) But pal etc can use bable in case of agrro..

4. How many time needed to boost 4 toons(shaman etc) 0-68 & 0-80 with dk 80? I understand that for all us it's different.. just give me few examples :) pls answer in hours.

many tnx!

KR,
Denis