From the limited I know, you are each a person - you, dh, and baby. Because there are only three of you your deductibles will match the family, so it really doesn't matter. The family cap only matters to you when y ou have four or more in your family.
If the difference in premiums is only $8 a month, then I'd do the second plan. My lord, that is a huge coverage difference for a very small premium difference.