Be aware that Expressvu has applied for, but not yet received approval, to move a unused Directv satellite to be colocated @ 82 degrees. This is to make up the 6 transponders unusable on N2.
If a DTV satellite is moved there, it is unlikely that the services put on N4 will be viewable in the southern US or Mexico. This is due to the fact that DTV satellites have a smaller footprint than Expressvu satellites. They will be turned to cover Canada.