Hey man, so you've finally decided to join a gym eh?

From what i see, your diet plan is quite solid. Be flexible with it so you don't get bored of eating the same food over and over again. Just remember to be strict on yourself when it comes to oil and carbs after 8. That's the golden rule.

Also, your workout plan seems very basic, which is a start. Try to increase your cardio as the week progresses, like 20 minutes, 30 minutes, 40 minutes, 45 minutes. This builds your stamina.
Seeing as you are a smoker, I assume your stamina's a little low, so take as much time as you can with the cardio.

Lastly, try to implement squats into your workout as soon as possible. When you have a strong lower body, it's easier to build a good upper body. That's another golden rule.

Also, so I've been told by many LYN-ers that squats are very beneficial to other body parts on your body as well. It's good cardio AND it's a good abs workout. Something to consider in the future.

But for now keep this up, man