I agree with musicprnt. The key thing is that this is not an album you’re planning to launch. It’s a prescreen. The adjudicators can tell whether you’re qualified to audition without hearing the best possible quality recording. And the inverse is true: a great studio recording (unless you cheat and also pay for editing, which I don’t recommend for many reasons) is not going to help you pass a prescreen if you’re not quite at the level the school is looking for.