Ok, I have been exercising pretty steadily sincce about Sept and have seen some strength gains, not as much as I'd like though, but I need to start looking better now... time for summer

.
Here is my routine and I am looking for tips on changing it to maintain what muscle I have a cut the fat.
Each day I do about a 10 min skip before workout, then I get about 30 mins on the bike at the end of each workout at moderate pace.
Mon: Chest
Dumb bell press - 45lbs(per arm), 55lbs, 70lbs, 45lbs, 6-8 reps each
Chest Fly - 25lbs, 30lbs, 30lbs, 8 reps each
decline press (smith machine) - 90lbs(-bar), 140lbs,120lbs
incline dumbell press - 35lbs(per arm), 60lbs, 60lbs
Tues: Back/shoulders
Shoulder Press: 3x8 slightly less than flat bench
lat pull down: 4x8 roughly 135 lbs
shoulder raise: 4x8(2x side & 2x front)
deadlift: 8x60kg, 8x100kg, 3x135kg, 6x100kg
row:
Wed: Off
Thurs: Arms
standing bicep curl- 3x8 25,30,35 lbs
tri pull down: 4x6-12
preacher curl: 4x8
Overhead tri pulldown?: 3x8
pulley curls:3x8
Fri: Legs
Squat: 4x8 135lbs, 185lbs, 205lbs, 135lbs
Leg Press: 4x 6-8, 270lbs, 450lbs, 630lbs, 360lbs
Calf raise: 4x8-10, 180lbs, 360lbs, 360lbs, 270lbs
Side lunge: 3x8, usually put about 50 pounds on my shoulders
Some adductor exercises to rehabilitate my groin.
Sat: Off
Sun: off
My goal right now is to cut the fat and get lean. but I want to maintain the little mass I have put on over the long haul

. What sort of changes should I make to my workouts? Added cardio?
My diet is so-so, I have been eating fewer potato, I generally do cold cereal in the morning 8:45am, then go to class, do my workout and eat a rather large lunch when the workout is finished(1pm). I have a small snack around 4pm then supper at 6pm. So pretty well 3 squares but I snack throughout the day.
I've never really had to cut before. I used to be a high level kickboxer and I stayed in really good shape pretty well year round and worked my ass off. But then I crashed my motorcycle, lost mobility and got chubby.
I am 5'6 180lbs now, I'd like to get to 160ish by july 1. Go from a 33" to a 30" waist perhaps

. Any tips?