OK, still getting problems here. PCS2 loads the DAE without much trouble, but it takes FOREVER saving it to POF and it won't load it again if I close then reopen. So the POF is probably borked... and after it generates the IBX (dunno how long that even takes, I just left it on overnight), it looks like this:

[sorry that it's a jpg, the png was too big for imgur]
I'll post the POF (and the DAE I used) here. I know most of the problems are caused by the massive amount of ploygons, but the thing is, it's not a performance issue at all once it's imported and the cache is generated. It takes a dozen or so seconds to load the ibx or bx or whichever one is used now, so once I actually get it to a working state it'll be fine.
DAE POF