this is my first time leasing and im wondering if this is a good lease deal?? its a 2012 335xi coupe. it has m sport package, premium package, navigation, satellite radio and harman kardon. MSRP is 55,920.00 My lease deal is 710 a month 36 months 10,000 miles a year with 5,000 total out of pocket. i also have 2000 in negative equity on my trade...what do you guys think??