I'll wish you luck with this!
'Jolene' lends itself well to a classic "Travis-pattern" picking sequence on a guitar, but there just aren't enough bass strings on a ukulele for this to work, in my opinion, though using an instrument strung "low-G" can help mitigate the issue.
Playing with a clawhammer-style 'bum-titty' arrangement also works on a "hi-G" instrument, but choice of key may be an issue here and of course assumes you both like and can play claw-hammer
Good luck - :music: