Default sd card confusion

I just rooted my phone and flashed beanstalk 4.4.1. All worked fine except now I have various sd card folders I didn't have before and doubled my files in my phone losing all my sd card storage. I have:

usdbidsk0
sdcard1
emulated
sdcard0

Emulated has two folders:

legacy and 0. Both of these folders have the same files as sdcard0.

Can I delete one or two of these folders. Is that possible. Do I have to return to stock...have no more space to add apps! If I do return to stock, do I have to clean out folders after doing so and if so, which ones. So confused...

PS - I asked a similar questions on this forum before but still confused. Thanks for clarifications.