Newbie!!

So....I apologize because I feel this is gonna be a long post!!
On Monday, I am starting on Adipex to try and get a jump on this weight loss. I am currently back up to 206-210 and I just can't handle it any longer. I have been a yo- yo with this for a few years now for the simple fact that I am lazy, I tend to eat crap and I love food.
In doing the research, I found quite a few obstacles I will have to overcome and I am looking for advice.
1. I cannot have any caffeine while on this medication. Yes, I went from a 12 pack of mountain dew a day to 32oz. It was a great feeling to kick this 30+ year habit. But I did it by substituting it with tea and other less harmful sodas. Now I can't have anything with caffeine and I am not a total water drinker. So.... I am trying to cut down on sugars, so what is another alternative? Has anyone used the decaffeinated teas? Are they any good???
2. I now have to actually remember to eat, and now remember to count calories, track everything and learn actual portions. This is gonna be a rough one folks, I am not a 3 meal, 2 snack a day person. So I think this will be my biggest battle. I have downloaded My Fitness Pal to help me because I want this to work. What are some ideas for foods that you pack for your lunch or snacks while at work? I have decided that I will NOT eat out for lunch while doing this because I will only end up sabotaging myself.
3. The gym is now in my very near future again. I will be using the membership to the Y that I have ignored for about 5 months now. I will be there Monday, Wednesday and Friday around 4. I would love to have some work out buddies to do this with, and to keep me motivated and accountable. Because I am neither!!!
4. 4. My cholesterol and triglycerides are really bad, I have a neck/shoulder/spine injury that prevents me from a lot of physical exercies.
Lastly, I hope I don’t annoy anyone by posting my experience over the next few months. If all goes as planned, I should lose about 35-45 pounds in the next 3 months. A total life changing experience is about to take place and I would be lying if I said I wasn’t a bit nervous. This med isn’t anything to joke around with. It has some serious side effects, which is why I have to take it so seriously. But I will be keeping a close eye on what I need to, in order to keep myself safe.
If anyone has experience, or knows someone who does, with this…. Please let me know. I have talked to a few people who have had success with it and I think I have it all figured out, but would love to have others to share with. I think I may even start a blog about it, instead of annoying everyone on here!!