As I look back, I always spent money on axes, inevitably shorting myself on amps, which, then would leave me less than thrilled on gigs (or even at home) as my tone was not what it should have been.
I would second that advice. Someone starting out is not going to do a lot of gigs with PA support, and if they do, it will hardly be anything to write home about. And even when I've done gigs with professional sound contractors, often the bass, just as in a recording situation, was given a quick brush-by after hours spent chasing monitors, drum sounds, etc. Most of us just aren't fortunate to work with backlines like you Jazzy or like Jimmy J.
I'd counsel some better five-string that would accept aftermarket pickups / electronics if required, but a serious bass rig as budget permits.
I'd think along the lines of some of the Ibanez basses, already loaded with Barts or Norstrands. There are aftermarket upgrades for Squier or the lower-priced Fenders. There's lots of choices out there, but I've learned the hard way to stick with common pickup shapes: How often have you seen BB Yamahas carved up to wedge in standard P or J pickups?
In any event, it has to adjust into a proper feel for technique, must play/stay in tune, and must be quiet electronically. Those three things are not negotiable.
For an amp, I'd suggest at least a tube front end over SS power: All-tube rigs can be confusing for a relative beginner, but that may not be a problem. Skip anything in the 100-200 watt range: You're playing five-string, and those low C's and D's will suck something that size dry THAT fast. Whose amp and what cabs are up to you, but I wouldn't entertain anything below 400 watts, and bigger is better: As the old rule goes, I'd rather turn a 1000 watt amp up to three than a 300 watt amp up to ten.
J o e y