with a suburban, you'll want a hitch rack, not a roof rack unless you want to pack a step ladder around with you.
as for sidewalks, in many places it is illegal for bikes to be on sidewalks. If you don't feel safe in the street, perhaps you need to find out where the local bike paths are.
I'd agree that streets are safer than sidewalks, no time like the present to teach them the rules of the road. Just pick your streets carefully.
irulan
2015 Liv Intrigue 2
Pro Mongoose Titanium Singlespeed
2012 Trek Madone 4.6 Compact SRAM