Make four accounts, use the Paladin to boost to boost several sets to 60th.
Maybe boost to 70th or so, once you're done with teams to 60th.

Then you should have a tanking type (Bear/Pally) around 70th, with decent (Northrend) gear.
Who can boost your fifth account (RAF link to the last account in the Pally set, as that account had no granted levels, so the least number of toons.)