Starting accutane and my new job as a beach lifeguard - Will I be okay in the sunlight?

I was recently hired to work on the beach patrol as a lifeguard. I also recently decided with my doctor that I will be going on accutane in 4 weeks (next period). Lifeguards are in the sun from 10-6.... If I wear proper sunscreen I be okay in the sun on the accutane? I typically wear 70 spf whenever I am in the sun and have used zinc on my nose before.. please help!!!

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