Hey Joshualouis, welcome to the forum!
I love the sound of a banjo tuned low with nylon or gut strings. It sounds mellow and calming.
I’ll link a few videos people have made playing their cello banjo kits.
I plan to make all of my kits with the option for cello tuning. I’ve widened and standardized the neck widths across all the kits so they can accommodate the thicker strings. All the kits will come with a set of strings that allow you to choose if you want to equip it for cello tunings.