Preferable shmeferable.
If you're going to be like that you don't need the second I'm, which would turn it into a clause.
(
Mu Dinofiddler,
Tue 24 Jan 2012, 1:07,
archived)
That would also force removal of the and aswell.
I'm Richard, an English teacher, therefore yadda yadda
(
Mu Dinofiddler,
Tue 24 Jan 2012, 1:09,
archived)