I have a 594 thus can say that the 58/15 LT aren’t designed for your needs. I’ve never tried replacing pups on 594 but did to my MEQ with different pups.
All videos below show how my MEQ sounds with those pups:
1. With PRS \m/ treble and Dragon II neck, through a Mark V amp.
2. With Bare Knuckle Aftermath set through the same amp. This BKP set is still on this guitar nowadays.
3. BKP Aftermath in clean setting through a Yamaha THR amp. These BKP aren’t only good at distortion, but also sweet enough in clean for my needs.
Your miles may vary. But I’m really impressed with BKP and will surely explore more of their pups.