Question: Is it preferable to fulfill Sh’nayim Mikra V’Echad Targum with actual Targum Onkelos or with Rashi?

Short Answer: Ideally you should do both, but if you only have time for one of them, it is a machlokes which one takes precedence.

Question: If someone did not finish Sh’nayim Mikra V’Echad Targum for the previous week, should he first finish last week’s parshah or should he first do Sh’nayim Mikra V’Echad Targum (“SMVT”) for the current week’s parshah and then go back and finish last week’s parshah?