Usually, you should choose the diet depending on your goals and objectives - not based on steroids. Once you set your goals, you should choose the proper diet and steroids to use in order to achieve that goal. So your diet will not change for sustanon - you just need to eat as much as you need based on your goals.
Definitely, increasing protein intake would be the best idea if you want lean mass. Also, I really like the carb cycling approach - it is very easy to adapt it to your needs, and it is not all that restrictive. All in all, it is a very balanced diet, where you basically eat everything - just on determined days.