I use an 11x14 unicolor tube for four 5x7 sheets a time. I load it in a changeing tent. The only issue I have had is uneven development when I do not start rolling the drum right away. I mean right away. Dump chemicals and roll immediately is the only way I have found to avoid this. I have been considering the jobo tube (I have been told this is not an issue with it) because It will grow as I do. The unicolor won't because it is not made anymore. BUt you can't beat the price.
I do not have total dark and have not needed it. I print on POP so no need for a darkroom either.