I'm a university lecturer (college professor for those of you in the US). As you can imagine, I know a lot of students, and if one of them came to me asking if they should get a second parrot, I would tell them to wait.
Parrots are so long-lived that you have to think about your lives together in terms of decades. An IRN could live for 20-30 years. Do you know what you're going to be doing in 5, 10, 20 years? How will two parrots fit into your life?
What are your plans after college? Many new graduates don't find secure, permanent work immediately after graduation; some find that they want to have the freedom to move jobs or cities/countries, and some struggle to find work in a not-great economy. Depending on where you end up working, you may be expected to work for long or irregular hours which will limit how much time you can spend with your bird(s). If you do get a second parrot and they can't be let out together, how will you manage that? You can let one bird out for 3 hours in the evening and it will still get enough sleep, but two?
You may also want to move out of your parents' home. Renting with one bird is hard enough - renting with two loud birds would be very difficult. You'll have to be able to rent somewhere big enough for two cages rather than just one. You'll either have to find bird-friendly housemates or deal with the additional expenses of living alone.
You may want to have a relationship. You may want to have a family. How will having two parrots fit into that?
Vet bills could also add up if both get sick or need treatment - this is especially an issue if they're in the same environment and exposed to the same stuff. Plus the additional expense of toys, food etc.
This is not a decision to rush into. Really sit down and have a think about what you can offer a second bird, whether an IRN is right for you and your current bird, what you would do if your two birds cannot be out together without fighting and injuries, and what your lifestyle will look like in the future. There will still be IRNs around in ten years time when you're more settled and have a better idea of what your adult life looks like.