Oh Scottie,
Wow, you'll really be styling then! Is there a big difference in Sq. Footage between the 3's and 4's? I've read that the 3's are only worthwhile if you get the ones ending in 32 or 34 or something like that. I'm sure you've read the posts. The other thing you have to decide is how important you think the concierge services will be for you. Our family probably wouldn't use those services much as we are not doing the spa or Palos. Pick a price you are willing to spend and don't go over it no matter how tempting. Remember it's only 4 nights...it's not worth it if it costs like $1000 or something like that. If it were me, I probably wouldn't do it. We only upgraded to get the veranda...I figured once we have the veranda we don't care what category it is (unless it's the Cat 1).
Well, that's my $.02. Hope you don't mind me sharing my opinion but I thought it might be helpful. Just ignore me if you disagree.