Is this a good weight loss plan?

I am a 5'6" female and weigh 150 lbs. Trying to get to my goal weight of 130 lbs.

I am currently cutting 700 cal from my diet and burning an additional 750 through exercise for a 1,450 cal deficit, with the goal of losing ~2 lbs/week. I do this only 5 days of the week (Mon-Fri). On the weekends, I do not exercise and eat a "maintenance" amount of calories, not exceeding 2,000.

I am supplementing my diet with protein powder (480 cal worth, for 100g or so/day) in order to avoid losing muscle.

For exercise, I focus on walking at a 12° incline and 3.0mph for a total of 500 cal burned (around 45 mins), and rowing 500m for an additional 250 or so cal burned.

Fairly new to planning things like this, so please lmk if this is a good kind of diet.
Is this a good weight loss plan?
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