I've met many clients your size before. In fact, in my opinion, fat mm is a good match.
Fat mm must remember not to wear short clothes at will. Of course, it doesn't matter if it is below 130 kg. If it is more than 130 kg, you will be very fat if you wear short clothes carelessly. Personally, I suggest wearing more skirts. Moreover, it is enough to wear a bottoming shirt+skirt+coat or down jacket in winter, which can already keep out the cold.
I met a client who said she had a long span. When I usually buy a skirt, I am afraid that it will look big after wearing it. At that time, I suggested that guests could choose the H version. H version is the ugliest version, which everyone can wear, and it is also very suitable, which can cover up the body defects well.
For fat mm, the medium and long length is a more suitable length, just enough to cover the big thick legs. You may say, why isn't that a long skirt? In fact, long skirts are more picky than long skirts. Wear short skirts if you are not tall, so I don't recommend wearing long skirts if you are not tall enough.
The down jacket itself is swollen, so the fat mm will look a little fatter, but the woolen coat won't give you such trouble. If you feel cold, add a scarf. And wearing a sweater or skirt under a woolen coat is a good way to match.