Judging by your weight and height, I think you should propably eat around 2200kcal per day to maintain your weight if you don't exercise at all (but you can find an online calorie calculator to estimate it more accurately).
Anyway, if you want to lose a pound per week, you should eat 1700 per day (you have to reduce your intake for 500kcal) and if you want to lose two pounds per week, you should eat 1200 per day.
So I think that your plan to eat 1400kcal per day is great. Counting calories was the only thing that ever worked for m and I wish you good luck