Those look like some good choices, we stayed at Caribbean Beach the last time we went in Sep/Oct 2009. It had a great tropical feel, however like I think you mentioned, that resort is HUGE!

Being it was our first time going to WDW as a family we were very excited to get to the parks, so the multiple bus stops and wide layout didn't work well in our favor. I would love to see one of those pirate rooms though! We had a Nemo one during our stay.
Our next trip, which is quickly coming up this September, (only two months to go!!!)

we have upgraded to a deluxe and are staying at Wilderness Lodge. My husband and I both liked the close proximity to the Magic Kingdom and are going to try to avoid the buses this time as much as possible.
My husband's dad and stepmom also visited WDW around the same time in '09 and stayed at PORS and LOVED it

, I've heard it's more spread out the POFQ but nothing like CB. I hope this this input was helpful, I'll be looking foreword to more updates and seeing what you decide!