Bolo

Haven't tried mine live yet. Seems to have fairly good off axis rejection. Works fine in the rehearsal room for a old school thrash metal band. What is the issue on stage?

Or try a SM7b

As a singing bass player...

A quick google tells me there's no shortage of 8ohm 210s. It could yield a 110, 210, 310 or 410 configuration for any size room or stage together with the current cabs. Possibly more convenient to carry too. I like 12 inchers myself.

Or get a 210 for even more flexibility?

I use DR strings DDT5-55 to tune my Stingray 5 to AEADG. Zero issues.

Cool! Headstock looks like a classic Spector with the upper stretched to fit the 4 in line config. Smart move.

I feel this avant-garde thing has been done and was rightly left in the past.

Never heard a bad word about them, not sound or build quality.

Apparently if you have a recent audiogram (hearing test results) you can program the airpods to compensate for any hearing loss. The FDA even approved them as over-the-counter hearing aids. Edit: probably only for mild hearing loss

I'd go with a string of colourful LEDs, add to the show and only the actually blind can claim to have missed them. Drape over the monitors or guirlande from the micstands?

Hot-glue a sansamp to the gss (baby) sumo. Done.

9v or 18v has very little to do with how hot the output signal is. I've had passive basses with a hotter output than any of my stingrays. A higher voltage pre could theoretically give a more dynamic signal, if providing higher peaks and a lower noise floor.

The pickups are in a different position. Perhaps a three band Stingray is more what you're after.

This sounds like a job I'd have a local luthier take a look at before getting wild with tools myself.