What Fitness Routine Would You Do if You Were Me?

Alrighty guys, here it goes: I'm a full time college student who also works 30ish hours a week. Classes at 8 am 5 days a week. Monday and Wednesdays I have class 8am-10am and work ranging from about 12pm-10pm. Tuesdays and Thurdays I have class 8-9am, and then 2pm-6pm Fridays 8am-10am and no work. Saturdays and Sundays vary greatly I can work as early as 4am until Midnight and anywhere in between. At my disposal I have 5lbs, 10lbs, and 30lbs free weights, I have an itty bitty studio apartment so some bigger compound movement can result in wall smackage. I adore cardio but now live in the middle of the desert where afternoon running is equivalently suicide. More facts: I'm female, 23, roughly 190lbs. Goals: Get within my healthy weight range, get stronger, look better! The only thing I'm really opposed to is morning workouts before school, I know myself, I know I will not stick with that. So, with no more babbling, what workout would you be doing if you were me? What workouts do you love? Tell me oh wise internet dwellers, bestow upon me your epic wisdom.

EDIT: I walk and Bike Everywhere. About 5 mile to work (10 miles round trip) biking. About 3/4 of a mile to school, and I can walk there and back up to three times a day, so the miles do add up. I also work on my feet, so I'm walking/standing for 9ish hours there.