Since you put F2 as an option, I assume you have ur spouse in F1 status. Under the circumstances, F2 is the best option. The time you get fired, you can immediately apply for F2 as long as your spouse is in valid F1 status. Applying for F1 may take time since you need to apply for school and get I-20 which is the lengthy process. Once you are in F2 and later on get another job, it's not a big deal to apply for H1 again.