I lived in two different cities and in seven different halls of residence, houseshares and flats between starting my BA and graduating with my PhD
It's great that you have an apartment for next year, but remember that it's only for a relatively short period. Unfortunately landlords can change their minds: one AA member had to rehome several beloved flock members after her landlady suddenly decided that she wasn't happy with the birds after years of being okay with them. It was enormously distressing and disruptive for all of them.
Ultimately, none of our birds are living with the space and companionship they would have in the wild. We all make compromises. It's a question of trying to make the best compromises we can. You've done well to improve her life - she has more space, a better diet, toys and, most importantly of all, is cared for by someone who is willing to learn and who wants to provide her with what she needs to be happy.
It's important to look at this in the long term: you and she will be most happy in the years to come if you don't get overwhelmed with bird care, are able to focus on your university work, and do what you need to do to be happy and fulfilled yourself. Don't put yourself in a position where you miss out on opportunities that you would resent missing out on, whether these are professional, travel, relationships and so on. Don't miss out on life experiences that will enrich you. You need to consider your needs too, and how you would feel if these went unmet. At this stage in your life, a small flock of birds would mean that your life would become much more complicated and you would miss out on things. As I said, it's doable to board one bird or to persuade someone to care for them - this gets harder with each addition.