What do you mean by > 'the humbuckers are starting to die?' They're just magnets with copper wire wrapped around them, they don't really wear out. What's the problem you're trying to solve? If it's quiet/scratchy/noisy you probably just have a bad potentiometer or a cold solder joint. If you don't like how to guitar feels then yeah something different may be in order. If you like the guitar but something about the sound isn't perfect then maybe different pickups will help, but your amp will have a much larger impact on your tone than different humbuckers.

It depends if you like the look and feel of your guitar already. If you do, then maybe the pickups are a good option.

Otherwise, a new guitar might be the option.

In the end only you can decide tho

I know your issue’s been solved already but for me it would come down to how you feel about the guitar body+neck. If you love the look and have some sentimentality attached to it, change the pickups. Otherwise get a new guitar

What pickups are you looking at that are as costly as a new guitar?

I’ve replaced a bunch of my pickups in my guitar. It’s a great way to get exactly what you want, and often you’ll get higher quality than most guitar brands use stock. Pickups will have the largest effect on a guitar’s tone outside of the amp.