Jackson has a fit page
https://jacksonskate.com/pages/fitguide
If you were under 40 lbs, Jackson recommends them for Basic 1-3. But above 80 lbs, like you, they aren't recommended by Jackson for any level skating.
In any event, it's impossible to guess what boots would fit your foot, without pain and/or risk of injury (sometimes including severe lifelong injuries), without a knowledge of the shape of your feet, and whether you have any of a number of other issues.
Men usually can't find figure skate boots that fit in stock at local stores, maybe at no stores anywhere. So most men have the fitter order based on their best guess, using rather simplistic measurements. The best figure skate boot fitters (there aren't many really good ones) guess wrong less often. If minor modifications are needed once they arrive, they know how to make them, and have the equipment to do it. They also know how to recognize defective figure skate boots and blades, which are surprisingly common, and might help you convince the manufacturer to make good on defective products. I'm a total cheapskate, and like to do as much as I can myself, but the extra cost of a really good skate fitter is probably worth it, especially if you don't have the knowledge and experience to do everything right yourself.