I looked through these steps and it's basically to change the url of the site, no?
What I'm aiming to do is create a clone of my site but in another language and with additional info related to that language (french). So when going to http://www.sunkenrock.com it'll lead to the english one and to the french one when going to http://www.sunkenrock.fr
A link "Read in French/English" will connect the both.
I could simly create a new set of pages specific to the language but I don't want to keep the english front page's update for the french version. As well, some link and widget are no longer relevant in the french version.
In short, what I'm looking for is to host 2 sites (url) on the same pro bundle (exploiting unused space as the english one don't even cover 1%).
If it's not possible I'll purchase another pro bundle but I already have 2 sites using 2 pro bundle (26go storage) while only 900mo are used...