No one appears to have mentioned the colour issue here.
If it is to be predominantly 'blues' that you are hanging out to dry, then tuning is self evident.
'Country' wear is much looser.
I have tried CAJUN tuning, but failed to find J, U or N on my electric tuner.
If, as I suspect, it is 'Folk' then that is an extremely long process with much written material stored at CSH for your perusal.
'Classical', of course, needs nothing done to it whatsoever.
It is dry enough as it is.