I made it about halfway through PLS II. Other people have said it and I agree--it's got about 50-100 useful pages. The rest feels unnecessary at best for 0Ls (at least, as a 0L myself, I find it highly unnecessary--i.e., I understand that some professors at some schools suck, and I'm sorry about that, but how does that help get me ready for law school?)
I think the week-by-week schedules set out in PLS II are a little intense. The idea of making your way through an entire ~700 page primer for every core course before classes even start seems like overkill. That being said, I find no harm in trying to teach myself at least the basics of BLL. I can't see how it will hurt to know the fundamentals of offer/acceptance, etc., going in.
I'm planning on buying E&Es for the core courses (hell, I'll end up buying study guides anyways, and I've heard good things about the E&Es) and going through at least the first couple hundred pages of each. Already have Blum on Contracts. Glannon on CivPro's coming next week.
Also, I'm still in UG, and I took a law & society course last quarter. It essentially functioned as an overview of the basics of the BLL in the core areas (although the prof skimmed over property pretty lightly). I kind of questioned the value of taking it at first, but I think it's going to turn out to be more helpful than I thought. For instance, I'm 150 pages through Blum, and it's all stuff that I had already learned in this class (mailbox rule, consideration for options, etc).