Basically want to upgrade the pickups to play sweet warm classic rock sound (lynyrd skynyrd).

I'm playing through a 1984 marshall jcm 800 2204.

Is it worth just upgrading the pickups on this thing or saving up for a les paul? i'm pretty happy with how it plays but the pickups could be better.

thanks for the advice!
My Gear:
-Fender American 1962 Stratocaster Reissue
-1984 Marshall JCM 800 2204
-Ibanez Wh-10 Original
-Boss DS-2 Distortion
-Boss CE-5 Chorus