Currently on F1 OPT, applying h1b and h4+ead together?

Hello,

This is my last attempt at H1B on F1-OPT. My application was not picked the last 2 times. As a backup, I’m planning to apply for H4 and H4EAD concurrently for a future date (starting right after my OPT ends, mid June). In case, by chance, if my H1B gets picked, and H4EAD is also approved, what happens? What would my options at that stage be?