A year is a massive amount of time, but it's really up to YOU what you choose - that's part of why you have to do a final project.
But pick a project based on what you KNOW you can do, don't imagine something impossible that you don't have a prayer of doing.
To give an example of what can be done in a short time, my daughter recently took part as an instructor (Music Team Leader) in a project to write and perform a musical. Forty kids took part, and in just ONE WEEK they wrote a musical from scratch, the story, the dialogue, the music, the lyrics, the dance routines - and performed the musical on the Friday evening (and it was really good!).
By picking a sensible project, and not having to wait for any parts, it should be quite possible to complete a final project in a week - but obviously it's much easier stretching it out over a year.
But most importantly, pick something you KNOW you can do, and that you know HOW to do it - don't pick something that sounds really exciting, but you don't have any idea how to do (or if it's even possible).