i am expecting my second child soon and i am imagining myself out with a toddler and a baby and a large bag. i was thinking that a cross-body strap so that i could be hands free wouild be important- what do you think? does it matter? or will a large purse do? i'd rather avoid having 2 bags ( a purse & diaper bag). the newborn will either be in a baby bjorn or a stroller all the time when out doing errands (i'm a sahm so errands happen often). thanks for your help!