Oh boy!
Honestly, you don't need any qualifications to become a pilot, it will be easier to study for your ATPL's if you do. But that's your choice. In the end, when looking for a job what matters is your hours and who you know rather than what you know.
I 'suffered' a meeting with a career advisor who said that before I can even thinking about training, I need to go to uni, because unless I do, I'll have no job in the end. Loads of crap. Second thing was, I suffered a personal injury when I was a little girl and he said that would disqualify me in 100%
When I went for my Class 2 medical, AME said that this doesn't even matter. It's nothing, and I'll have no problems with passing Class 1 which I've got coming up soon!
If you want to become a pilot, go for it. It's a tough road.. especially in the current climate, but I personally think it's good time to train, but before you spend a penny, get a class 1 medical.
Good luck!