If a new baby is in the works for the new year, prepare yourself now. Despite the pure joy of having a child, the fact of the matter is that the basics – daycare plus a second bedroom, extra health insurance, food and personal items – are expensive even in Little Rock, Arkansas, which is at the bottom of Magnify Money’s new ranking of the cost of adding a family member in 100 U.S. major cities. Monthly expenses for an infant exceed $700 a month in Little Rock, or nearly $8,500 a year. The big budget buster everywhere is day care, which is a financial shock for most new parents. The bills can easily reach or exceed $1,000 a month, and day…