This is really a personal decision for you and your husband to make.
If he is able to sponsor all these people then he is making good money.
Do you have children?
Discuss this together and find a way forward that is not burdensome or create problems for your family in the future.
You are welcome to use the link provided below.
You can view the poverty guidelines at the link provided below. As long as you meet them for your family size (include the immigrant), then you are eligible. If you are eligible, then it is your personal decision about whether to proceed.