HI, and welcome!
One thing that works for a lot of people is to start with the men's portions until you get used to the rhythm of eating and get some stand-by meals and snacks going, if you're way too hungry at the beggining and that makes it difficult to imagine staying on the plan for a while, this will make following the program easier. Once you get used to it, you may find you can gradually drop down to the women's portions. The key is to avoid a binge and it happens that on some days you simply need a few extra calories or you need an extra snack. That is fine if it avoids a binge - remember, this is a long-term plan and you have to sometimes make some "mistakes" to learn what works. We've heard many examples of people who have done very well on the plan (they feel great and lose weight) and then they go back to their former eating habits and in doing so, they have a contrast to how well the Serotonin Power Diet works for them and, by getting off track, they are motivated to get back on the SPD and stick with it.
Whatever you do, pay attention so you know what works and what doesn't, you may have to fine-tune the times of day you eat or the portions, but just remember, you must be eating your protein earlier in the day, and time your carb snacks and carb dinners such that you're not eating them less than at least 2 and optimally at least 3 hours after you eat protein.
And keep moving AND treating yourself with respect and kindness.