Thanks a lot for your answers!
One final thing I’d like to ask, in order to equalize the overhead of running two sites with the same content is if I can have a single media repository for both of them. I know I can upload my media to the first one and get the urls on the second one, but I think a junior author would be more comfortable if he/she could get the same media results no matter which site is administering.
Thanks again for your help