@turf3, I'm with you. My student and I are reading sheet music and playing the notes we see. She's never tuned her bass differently to date, so even tuning the 4th string down to C# will have a learning curve.
Frankly, and more than you need to know, but she's working on this tune because she - high school student - and some of her friends were talking about forming a band that now seems unlikely to happen. This isn't her first instrument, it's her third, and probably what we're going to do is just find a new tune to work on and save further exploration of this one for when and if she needs to perform it. For now, flipping the C# octaves up an octave sounds just fine as we're playing along with the recording.
Again, more than anyone needs to know but I grew up playing guitar with a teacher who forbade the use of capos, and I also have perfect pitch, so I'm listening to things and thinking things like, OK, that's in Bb but it sounds like a guitar with a capo on the third fret and playing in G because that particular chord voicing doesn't lend itself to becoming a bar chord.
<sigh> For some of us - that would be me in this case - just can't take a simple approach to a thing that's simple for other people.
The one thing I've had to get used to over the years on guitar is dropping the low E to D - there are a fair amount of classical guitar transcriptions and even some original compositions that work that way, e.g., most every transcription of the Prelude to Bach Cello Suite #1, right back to Segovia, has been in the key of D with that drop D last string.
-S-