"I plan to apply for H-4 and quit my job when I get H-4 receipt"
Then, don't quit your job for another month until you know the result of the offer. You will then file H1 transfer if with offer, or file H4 COS if no offer. Save >$300 filing fees.
Then, don't quit your job for another month until you know the result of the offer. You will then file H1 transfer if with offer, or file H4 COS if no offer. Save >$300 filing fees.