Hello Romain,
How easy or difficult Paros are depends on your experience with (blackwater) fishes.
You wrote that you are very young (12), how long do you keep fishes? If you have no experience with other related fishes, I think you should try to keep and breed species that are not endangered. For example Trichopsis pumila. They will help you to get an feeling and an eye for the things that (can) happen in an aquarium, you learn to handle live food cultures for larvae and so on.
When you do this for the next 4 years, you are ready for breeding Paros.
nice greetings
Patrick