Juda's back! Welcome back, Juda! Nice to see you again.
I believe that you'll know the answer when you go see it this weekend. You've already been down this road before, collecting Cabats, then finding new homes for ones that weren't the "best" ones for you. Now you have that learning experience, so I think you're well-equipped to make this decision when you get to see the karung Cabat in person.
I went through a "Cabat fever" phase, too. I've owned 6 different Cabats, 5 from the boutique and one via a special PFer. I've enjoyed them all, actually, but I decided that 4 of them are "keepers," and the other 2 were ready for new owners. Along the way, I've passed on several, even after obsessing over online photos of them. Once I saw them, the reality didn't match up to what I wanted, and I knew it. For each one that I passed on, I was wishing it were somehow a little bit different (wishing the color were a little different, wishing it wasn't so shiny, wishing it was a more durable leather for what I wanted, etc.).
There will always be a "next time," too. My most recent Cabat was sent for my consideration from the boutique, and within a few minutes, I knew that it was meant to be mine. It's an older piece, and I had thought that the style had been sold out. I got really lucky! I am not an impulse buyer, so I thought about it for a little while, but I did get it and was actually feeling happy when I paid for it. It's a much better feeling than buying something with a little anxiety about whether I'm making the right decision, for sure.
This pretty much sums up my own test, and it works for BV (and Hermes, too). How excited am I when I go to finalize the purchase and pay for it? If I feel any doubt about the color, leather, size, or anything--I walk away to think about it, and generally, I end up relieved that I didn't buy it. I admit that sometimes I get in the mood to buy a new bag--just because I want to. But rather than make a less than ideal choice just for the sake of buying, I wait, sometimes for years. For me, that's better than ending up with something that's not quite right, wishing it were somehow different, wishing that I liked it more. Something better always comes along.
Good luck with your decision! Like I said at the beginning, I think you'll know whether it's meant to be yours or not.
