Hey there ... welcome.
I would suggest a few more calories and thinking about the 7 p.m. rule a little. It might work for you, but for me, I dont' even get home from the gym at night until 7. Then I'm up until midnight. For me, going 5 hours w/out eating would be unreasonable and would set me up for bad cravings.
I'd suggest a slightly later "end of the day" time - and plan in a healthy evening snack around 8:30 or even 9 (depending on what time you normally go to bed).
And maybe around 1500 calories would be a good level that won't make you feel deprived and like you need to "slip back" to old habits.