Yes I used UW as I went through second year and I did it again during the study period. First time through, I read every line of every question and tried to understand each question as best I could. It really pays off at the end, but it is a major major pain as you are doing it. I would also advice doing pharm and micro cards as you go. Just 2 a day of each and you'll be pleasantly surprised how much of it becomes second nature b/c you see the same stuff in UW.
Goljian rapid review should also be done as you go. DO NOT wait till the study period to finally pick-up that book. Also read FA in sections as you go.
Every step of the way (no pun intended), make sure you are UNDERSTANDING each question in UW as best as you can. It really adds up in the end.
GL