Current plan -
Gym 5 nights a week after work - 1 hour on the Stepmill, then weights:
Day 1-Dumbell Curls/Overhand EZ Curl Bar Curls/Tricep Dips/Rope Pulls/Forearm Curls
Day 2-Leg Press/Leg Extensions/Leg Curls/Glute kickback machine
Day 3-Bench Press/Incline Press/Decline Press/Flys/Reverse Flys
Day 4-Dumbell Laterals/Dumbell Front Raises/Dumbell Rows
Day 5-Ab Crunch Machine/Leg Lifts
I'd make a few changes to this:
1. I'd do your cardio after your weights session. If you're wanting to be around 200lbs at 12%, you're gonna need to gain some muscle, which will be hard to do when you're not lifting heavy due to being already fatigued from the cardio.
2. You don't appear to be training back in that routine? You also haven't got many of the basic compound movements in there either.
3. I'd also move the order of the workouts around slightly, so that you're getting sufficient recovery time.
So, with those changes you'd have:
Day 1: Arms - Barbell curl, Triceps dips + other movements of your choice, finish with abs. Cardio
Day 2: Legs - Squat + other movements of your choice. Cardio
Day 3: Chest - Bench press + other movements of your choice, finish with abs. Cardio
Day 4: Back - Barbell/Tbar Rows + other movements of your choice. Cardio
Day 5: Shoulders - Military press + other movements of your choice, finish with abs. Cardio
Choose whichever exercises you enjoy to complete your workouts. When you're just starting out, it's more important to enjoy what you're doing and keep your motivation up. 1 hour of cardio every day after a workout may be too much, but see how you feel after a couple of weeks.