I am looking for a way to install WordPress which will also set all the permissions correctly, so that it will be able to handle automatic core and plugin upgrades.

Despite searching these forums, I still have no idea whether Softaculous will do that, so, the only way to know is to try it.  Unfortunately, the shortest license period appears to be one year - there is no way I can justify buying a one year license simply in order to see if something works.

Does anyone have any suggestions?