NAC Jacking a Scoobie-doo

[Robert Myers]

Hi Y'all,

Sorry about the total NAC but at least it's AWD.  ;-)

The victim: 2007 Scoobie Forester 2.5XT

The job: replace the OEM summer ("all season" [IOW, no season]) tires 
and wheels with dedicated winter tires and wheels

The problem:  Owner's manual sez use only the jack (scissors variety) 
which came with the car.  Looking at the jacking point it appears to 
be plastic and therefore a nice crush point.  I would like to use my 
decent floor jack.  Can I?  How about jacking up the entire rear end 
using the rear diff as the jacking point?

Recommendations?

Bob