Weak pickups in Millennium?

[BusterDog]

I bought a new Peavey Millennium 5 BXP.
I really like the feel of the neck, & the bass overall.
When I got it home & tried it on my rig, I realized that it's output is really weak compared to my other basses.
I plan to use this with an A/B switch along with my main bass, so changing amp settings is not an option.
The pickups are already a bit too high, so I can't raise them up.
Should I:
Change pickups? I can get Basslines SJ5-3s at Guitar Center.
or
Upgrade basses to the Millennium 5 AC BXP with active electronics. Guitar Center will let me return the bass.

[Bassslayer69]

Do you like the tone of the stock pickups?
If so, stick with the stock pickups, but toss in a Bartolini preamp. (Vol,Pan,B/T stack version)It will bring that bass to life!
If the tone is lame, then I'd upgrade to the AC version. the Cirrus pickups have a great tone to them IMO.

[BusterDog]

Thanks,
I've never tried a preamp.
I'm leaning towards getting the active model bass. It has much better reviews.