What are the best application strategies for a family of four applying for a workation DTV visa at the Los Angeles consulate?

Hello, we are a family of 4 preparing to apply for a workation DTV through the Los Angeles consulate.

My husband and I jointly own our companies together as 50/50 partners. We are both employees of the companies. It seems like when submitting the application, it needs to be from one applicant and couples are not applying jointly together.

I'm wondering how to navigate this application process.

1. I could apply first, then the rest of the family can apply and I'll sponsor them.

2. My husband and I could both send in our applications at a similar time.

What would be the pros and cons to each?

Los Angeles consulate seems to have a high rate of rejections, which is why I thought perhaps we could send in 1 application first, then the rest of the family can become dependents.

Another question is: How should we navigate the fact that the business and all of our accounts have both our names listed on them, as opposed to just my own? Will he need to write a letter or something? What should that letter say?

Thank you so much for your insight!