Hello and welcome!
Getting a parrot really does depend on several different things...
1. Your age -- depending on how old you are, I would not recommend a medium parrot for anyone under the age of 21. This is because at a younger age (we get kids 12-20 here asking about this a lot) you simply cannot provide what a parrot like this needs to have a happy life. This means providing your bird with a huge cage, food prepared daily (they require a diet of fresh fruits and veggies), as well as a couple hundred dollars of toy expenses a month, not including trips to the vet, etc. At a young age you are just starting to figure out your life, your social life, dating, going to college, moving, etc. Just so much easier to wait until your life has settled and you have a stable source of income and a reliable vehicle.
2. Your income! - How much you make on your own will be a huge factor to what you can provide for a Hahn's macaw. Please take a look at this thread --
The cost of wning Parrots and it will give you some insight into how much it truly costs to own these bigger species. If you do not have your own income, your parents won't support you forever, eventually your parrot will grow and may even outlive you!
3. Time -- Yes, parrots will take up lots of time! With their feeding, training, and socializing, parrots like the Hahns require lots of attention and want to be a member of the family. If you go to school all day, or work 12 hours shifts, or go out with friends, it may not be enough time for your macaw to be out of the cage. They need at least 3 hours a day (minimum) to be outside the cage and play with you.
4. Patience! - Training parrots and earning their trust will take time and lots of patience! baby Hahn's macaw can be purchased for around $1400 from a reputable breeder. You may be able to find one (or other medium species, like African Greys, Eclectus, Amazons) in rescues, many need a great home. But with this they often have issues with socialization, trust, etc. Or may need trips to the vet for medical attention from past illnesses.
I hope this has been informative to you! Again, welcome!