Welcome on HT Julien!
You have pretty good ambitions, and I like to see this :)
I can assure you one thing, based on my experience: You will surely find a lot of good friends, thats guaranteed.
Just don’t forget (and don’t take this the wrong way) that “IT security” includes a lot of subjects and there is A LOT to study, you have to take into account that you will spend a lot of time studying to keep yourself updated on new infrastructures, techniques, technologies, etc…. and this is something noone can help you with.