There's LOTS of guys who WISH they'd bought the Squier Precision Five. I did. And I know why you can't find them, no one's turning loose of them, at least not yet. It's that good.
A 24-fret five-string Precision Bass is going to be a specialist piece. However: You might find a 24-fret PJ, passive, with a separate volumes for the two pickups, hell, you could clip the lead to the Jazz pickup if you're really ate up about it. Get a neckthrough while you're at it, it makes 24 frets WAY easier to live with.
Don't over-think this. You could wait . . . . and wait . . . . . and wait . . . . and still FINALLY buy something and kick yourself about it. In fact, most likely, you will.
I think the idea of a lifetime bass for me personally is absurd. I've been playing since the 70's, and instruments and amps have improved by leaps and bounds, but also, what I THOUGHT I wanted wasn't always borne out by the instruments I bought. Over time, situations, gigs, experience, and just evolving as a person and a player will change from what you think you want (and man, I thought of some crazy s++t from time to time) to what you KNOW works for you, and what you must have in an instrument for it to suit you.
At first, you're at the start . . . . of that journey.
And oh yeah, no more beaters: Nothing says 'I'm not serious' than a crappy instrument. And it doesn't have to be expensive, but if it's noisy, won't stay in tune, and you're constantly nursing it along, it's REAL easy for a band to say 'what's that other guy's number?'.