I was also in a similar situation.
I go the Saturday after Thanksgiving to POR. I did a room only ressie for the 27th at rack rate; then a six night package. I still saved $525.00.
I didn't purchase a ticket for the first day; I had a ticket last year that didn't get used for a few days, because I was sick, so I am going to use that for the first day if I can or just hang around the resort.