yearly balance- in-laws and parents interview within 1 month - pls help

[jpimhlp]

We are planning to send my in-laws and my parents for visa stamping around the same time , not the same date but within 1 or 2 months.
We will be sending my parents together first and then my in-laws together on some other date.
We have an average yearly balance (8000 USD in my husband's account and 6000 USD in my account). We feel the combined balance is good for two people but not for four.
When they go for visitor visa stamping will the VO check how many people we have sponsored. Will average balance be a problem in our case.
Please give your suggestions on this. Thanks in advance.

[immihelp]

When you sponsor people, there are questions in DS-156 that asks whether you have sponsored other people in past.

Therefore, whoever goes later, you will have to write details about the people who went earlier for visa interview.