Here are 2 articles that may help you decide:
We don't know your body or mental state any better than you do. Everyone is different. Remember that the plan is written by an extremely driven individual who is arguably the top nutrition coach in the world. You will have to find a way to make the decision yourself. If you have 10 weeks or so, you will be able to make significant progress either way. In general, the first 2 weeks is the most important for resetting metabolic machinery. However, if it becomes untenable, there is no way you will make it to the end.
The articles I posted should give you the background to decide. Read them over many times, I promise it will be worth your while.
By working this out on your own, you will learn a lot more about how your body responds (and your mind too) than if you just follow someone's advice, opinion, or validation.
Here are a few tips from experience (not necessarily Get Shredded, but similar):
Make sure you add some salt to meals. When eating clean (cooking from scratch), sodium intake will be half the required amount, this means you will need 1-2g (1/4 to 1/2 teaspoon) of salt a day spread over your meals, more if you sweat excessively during exercise (add salt to your workout shake, about a 1/4 teaspoon). I think lack of salt is one of the bigger triggers for deviating from the plan.
Eat plenty of green leafy and cruciferous veggies. I recommend cooking them to make digestion easy, as well as breaking down antinutrients and increasing their ability to 'detoxify' (increases binding ability of bile acids among other things). Broccoli is easily steamed in the microwave in a bowl covered with a plate for 4-6 minutes, no water needed, make sure the plate seals reasonably well - don't nuke plastic. Spinach or other leafy greens cook well on medium heat with a little butter, coconut oil, olive oil, etc. Cook until it reduces in size and becomes limp and darker in color. Add other veggies for taste if you want and of course herbs and spices.
Raspberries are extremely high in fiber and low in carbs compared to other berries. There are excellent frozen ones from Chile available year round at Walmart or any grocery store. Very fresh and well priced. If you don't feel like eating veggies for more than 2 meals, consider this for a meal or two.
For supps, get a quality multi-vitamin/multi-mineral with chealated minerals at the very least, particularly magnesium, if it says magnesium oxide skip it. Fish oil and vitamin D are usually helpful, go easy on stimulants - the cycling one week stronger and one week mellower is a good idea, consider Mag10 instead of BCAAs if you have the funds.