I have the boss waza bass cans. Its a joy to use — not being restricted by cables. Sound quality is great and it enabled me to relearn a loooonnng setlist after the extended lockdown/social distancing break. It isn't cheap but I consider it a worthwhile investment. My way of using it is to take live/rehearsal recordings of the band and remove my bass using RipX. I put these bassless tracks into a playlist on my iPhone and play along using the Waza Air.
I 've tried various sets and use D'addario ECB81M Chromes on my three JMJs (and my other mustangs). I used to use TI JF324 on my CIJ mustang and can confirm that they will fit the JMJ without any issues and they will be lower tension than the Fenders or Chromes..