Hey everybody - The new band I'm playing with has a few songs in our set where the guitarist switches from his 7 string in A standard tuning to a six string in drop C; as in the guitar is in D standard with the lowest string dropped an additional step down to C. This leaves me some interesting, and possibly amusing, choices. I'm playing a five string tuned ADGCF, so option 1 is to just play in key on that bass, forgoing the concept of an open low C. As this is all new material to me, it's a great ear exercise. Option 2 is to bring a second 5 string and drop the lowest two strings, GCGCF. This particualr bass is strung using a Kalium set, so it can probably handle another step lower. Option 3 is to bring a 4 string strung CGCF. Any thoughts or reccommendations?