The bridge on there is functionally fine. I prefer the look of a vintage bridge and I think it would be a good fit with the other mods you are making....but that is just my preference.
The vintage bridge with threaded saddles or the one I already one? Cause the one I already have is a MIM one and the saddles are laterally moving because they are not held by slots. No big deal though, as long as the height setting screws are holding.
I’d suggest rolling the fingerboard edges (can be done easily with a bottle neck or similar round object) and possibly getting an actual crown on the frets, as almost every Affinity I’ve played has had frets that were just shy of being actually dressed.
Edit: I see now you’re already planning on changing the neck.
The Squier Classic Vibe neck I'm getting has rolled fingerboard edges. To be honest, even the Affiinity neck is a pleasure to play on and the fret are perfectly fine as is. I'm promise that so far I'm very happy. Even with floppy tapewounds on it!
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Great Score!! I too scored a 14 year old model that had sat in a closet unplayed for all of its life. It was owned by a Fender employee. A great bass still had the plastic protection on it! Thanks for posting! You got a great bass! I love mine
Man, I wish I still had the original Squier sticker! I'm a lover for keeping original stuff... I wish my Jazz also had the Classic Vibe sticker; These were so fUnKy !! Please post a photo of your headstock. Take care of it.

