A good weight is about 165 but as you mentioned to get to a low BF% you may need to go lower. The real problem is a lack of muscle. You're not far off your target. Work on improving your fitness (mainly strength) and eat at maintenance, healthy whole foods, with adequate protein.
How much should a 178 cm height Male weigh in kilograms? What is normal weight for 178cm Male? What is the Ideal Weight for 178 cm Male in kg? The answer is 73.2 kg.

The average American woman of 20 years of age and up weighs 170.8 pounds (lbs) and stands at 63.5 inches (in), which is almost 5 feet (ft), 4 in tall. These numbers may or may not be surprising to

Healthy BMI Range. The World Health Organization's (WHO) recommended healthy BMI range is 18.5 - 25 for both males and females. Based on the BMI range, it is possible to find out a healthy weight for any given height. BMI is a commonly used metric for determining IBW.
Medium-weight linen bedsheets often have a GSM of 160, though thick, high-end sheets usually have a greater weight. 180 GSM Fabric. One of the most popular uses for fabric in a weight of 180 GSM is the standard cotton knit t-shirt. Of course, you can buy tees in various weights, but 180 GSM is the most popular.
Cm to ft conversion. To convert centimeters to feet, divide the height in cm by 30.48. For example, if someone is 185 cm tall, to find their height in feet divide 185 by 30.48 to get 6.07 ft, or approximately 6 feet and one inch. If the height is given in meters, first divide by 100, then perform the same math to convert cm to feet. . 326 295 195 114 116 145 39 12 183

how much should 180 cm weight