Will taking a break from a diet due to a prolonged (3-4 week) plateau result in weight loss after that week?

Don't weigh yourself every day. In the morning you will always weigh less than you do at night. Doing this will discourage you and think something is wrong when it is not. Weigh yourself once a week after you wake up. Also, your basal metabolic rate is 1700, you should have a net calories of 1200 to lose weight. This can mean either eat 1200 calories a day and don't exercise, or do the recommended method of eating 1700 calories and burning 500 through exercise. Either way, your net total for the day should be about 1200, give or take. Looking at this, you are eating 1300-1400 calories a day along with exercise, you are having a net total of 750 for days when you burn 650 through exercise. This is way way too low. When you don't eat enough, your body thinks its starving and will not dig into a deeper hole if it loses more weight. If you are burning 650 calories through exercise, then for that day you should be eating 1850 calories to get your net total of 1200. After 2-3 weeks if you notice your weight is the same, then you should make some changes like decrease calories or increase your exercise. Anyways email me if you have more questions.