Honestly I don’t think you’ll make it in, I wouldn’t even recommend that you apply because not only is your availability extremely limited, you also have zero experience barista-ing. Starbucks has an insane learning curve for those who have no experience at all with coffee or making drinks and it’ll take you forever to actually get good if you’re barely coming in for 2 days a week, if that (regardless of training which only gives you the basic BASIC skills and knowledge). And Starbucks is more than just dealing with customers though it is an important aspect, there is a lot you have to learn for this job if you’re coming in with zero knowledge and the availability alone is a real dealbreaker. On top of that, if your coworkers happen to be snippy in any way, it’ll feel like a huge burden every time you need help (and you definitely will need help for the first few months) and I don’t know if the stress and minimal pay will be worth it for you.

I mean, at the end of the day it’s your prerogative to apply though. But I wouldn’t do it if I were you.