before you go any further, what is your budget...

each city has different by-laws in place for where you can fly, check those out. Also, if you join AMA (they offer insurance with their memership), they will only cover you at an authorized field. I do fly in a local park (soccer field) sometimes with my 450 but only when no one else is there. as soon as anyone comes within 100' of me I pack up and leave.