need advice from a professional

Hello! I am brand new to this site. I am a 42 yr old male with cardiomyopathy since 2008. In 2009 I received a pacemaker/defibrulator to aid my heart in pumping better, and because of deadly heart beats or something(tachycardias). I went from 179 lbs to 217 lbs. I've been on a heart transplant list since 7/2009 as well. Doc STRONGLY suggested I begin to loose weight and get in some kind of shape. I started out walking in march of this year 4 miles @ 4 mph. I currently weigh 195-198. I currently have the following workout schedule and I am curious as to if I am OVER doing it. My wife seems to think so, but I love it more everyday as I feel better everyday! Below is the schedule Also, I am 5'8 if that even matters. m - 8 mile bike ride to the gym @ 12 mph on a beach cruiser with no gears. 45 minute shoulder workout. Walk 4mph over two bridges for 40 minutes. Swim what I call light to moderate for 90-105 minutes. (1.5-2 miles) freestyle. I have for the last couple of days worked my way to swimming sets of 200's 13-17 of them with 30-45 seconds rest between sets. Today I actually swam the last 15 minutes of my 105 minute swim with no rest. Then......I bike the 8 miles back home. I repeat this schedule everyday except for sunday. I usually just walk and/or ride bike on sunday. or nothing at all...although that is becoming harder to do just sit around. The rest of the days, I do the same but workout different bodyparts. t - biceps, triceps traps w - chest and back th - shoulders f - biceps triceps traps s - chest and back and all the above cardio also. I generally eat very well (whole foods) high protein and carbs and low fat.....and around 2500-2700 calories a day! Is this overtraining. I am sore (not badly) everyday. A good sore tho. I am hoping to get down to 170 lbs asap!!!!! I also currently have 25% bf, 30 bmi, my last scale read a ffm 148.8 lbs....tbw 109 lbs....fat mass 50 lbs. this was done on 8/24/11 I am hoping to get to 170 lbs and 10-12% body fat ASAP. Thanks in advance for any workout, nutrition, supplement info /advice you guys can give. :chug: