I'm considering buying a 7 string bass which is currently strung in standard tuning (B-F in 4ths). I would like to restring it from F# to C, and drop the F# down a step to E.
I'm aware of the tonal range challenges of such low frequencies, but am curious as to advice on what strings would be recommended (prog rock/metal, jazz, classical mainly) and how long I should leave the bass without touching it after restringing etc (basically, any important considerations before during and after restringing).