I took a long break from multiboxing and I want to come back now that MoP is being released.

I used to 5 box HPal + 4DKs like everyone else and their grand mother. The reason I stopped multiboxing was because Blizzard makes changes all the time and one way or another my boxing comp felt unable to adapt. For a while warriors were OP, then rogues became OP, mages were OP all the time, etc. I needed to be more agile into changing my team to counter all these changes that Blizzard was doing. But that meant a bunch of leveling I was not willing to put up with.

So now that I'm coming back to boxing, I want to use a different strategy. Which is I need to get all classes that are viable in boxing up to 90 and get conquest gear for all of them at the same time. What this means is that no matter what happens mid season to a class or another, I can adapt by changing my comp on the fly.

Also, instead of 5 boxing, I'm going to 10 box. In AV and IoC 5 boxing feels limited, since in those BGs i'm not really playing to win, but to smash faces hard and get as many emo whispers as possible from lvl 1s. So that means I need to be able to kill 30+ players by myself. I think 10 can achieve that with 2-3 healers and 7-8 dps. Also, I want to try raids solo at some point.

So the teams that I want to level are 10 of each of these classes: DK, Paladin, Warrior, Druid, Monk, Shaman. This covers 6 melee classes and 4 healing classes which is more than enough.
I'm not interested in Mage, Warlock, Hunter, Rogue, Priest because these are not boxable, at least not competitively.

Hunters might be an option now that they lose the dead zone, but multi rogues are gimped since we can't use all of their skills effectively.
And the caster classes are just not interesting to me.

Why am I writing this post? First of all to do some conversation with my fellow boxers and then I need some advice on how to start 10 accounts. I already have 5 now, but they don't have MoP on them, so if I only buy 5 more accounts, upgrading all 10 to MoP means $60*5 + $30*5 = $450 but I would be really gimped because RAF will not work properly with 5 existing accounts (i.e. I can't level 5 at a time and have the XPx3 bonus, only 4 at a time).
If I buy 10 new accounts that will cost $600 which is only $150 more. So my existing accounts are not worth much now.

So, do you guys have any advice on how to setup 10 brand new accounts?
More specific questions:

1) Should I have 2 bnets or 10 bnets? In my 5 boxing I had one bnet and it was painful to always have to select the account at the login screen. If they are separate bnets then I think I don't have to select anything if I save the username.
2) The link scheme? 1>2>3>4>5>6>7>8>9>10? Or something else?
3) Anything else that you guys want to share
4) I need some encouragement words to pull this through and not give up when I realize how much work all this will require in the beginning

Thanks,
Palee