Private co vs public co

Hi all
Currently im doing acca.I completed until F8.Now i want to work and do ACCA part time.But i do not know whether to work as a public accountant or private accountant.I thought if i work in a private accountant it will be less stressful and i can focus more on my papers.But i do not know if the workinh experience i gain will be relevant to my exams.If i work as a public accountant,it will be stressful and im worried if i can focus on my exams as im worried there will be less time to study.will the working experience in a audit firm/accounting firm will be easier to pass my acca exams.
Thank you!?