I would agree with the above regarding the acoustic bass getting lost when playing with other instruments, I believe that they are probably best used when practicing alone (and as the actions are usually quite awful, when you pick up a regular bass it will feel like silk!)
However, a few years ago I played a few events with an acoustic combo and borrowed a Hohner acoustic fretless bass which sounded lovely and zingy with Ernie Ball slinky bass strings on, to boost the volume in the mix, I simply used my trusty battery Pignose on a strap so I could move around with the guitar, fiddle, snare and banjo players. It was very like a mariachi set-up but playing country, blues and folk stuff. Great fun at the time but I never felt the urge to actually buy an acoustic bass, with a battery amp I could have used a regular bass but the events demanded acoustic instruments.
Good luck with it, it actually looks like a nice instrument, have you considered E as your low string and either B or C as a fifth high string? Could be good for melody and will cut through if playing ensemble