・・・。
All right then... shall I get out of here before they find me?
Literal
Well-then... be-found [before-前に] flee [question-か].
さてと is the drawn-out self-directed さて 'well then,' used when the speaker is transitioning between activities or starting something new — often muttered to oneself. 見つかる 'to be found' is the intransitive counterpart of 見つける 'to find.' ~前に 'before X' attached to a plain form. ずらかる is the colloquial slang for 'to flee / skedaddle.' The final か is a casual self-directed question.