APNP, Question about documents to submit

[mabm]

Hi,

I am Mechanical Engineer and have a work permit valid for 3 years.

I am collecting all the information to submit the application for APNP.

With the form ABPNP 005 we have to add:

 1-the current CIC Work Permit.
 2-A copy of the current Service Canada or HRSDC Labour Market Opinion Confirmation.

 My question is : Will be enough to add only my work permit and the current Service Canada? This Service Canada , can be my SIN (Social Insurance Number )?

 About the reference letter, is enough with a reference or recomentation letter from my actual employer?

 If you have any advise, I'll appreciate here it.

Thank you very much for your support.