10,000 steps a day helped this man lose 180 lbs! I don't usually look at men's health, but it does tend to pop up occasionally when I google certain information. So I grabbed you a link: https://www.menshealth.com/ Personally I think you should be flexible with that end mark until you know how your body will react. I also saw an article on that page that addressed overcoming a plateau. I didn't read them. But this site can give you a lot of beneficual information.

At two pound a week, it will take 10 months, which is a realistic goal, don't focus so much on the end goal, but be pleased with yourself for the couple of pounds a week that get you there, at first the body will try to hold onto fat until it gets use to the change in routine. Don't miss meals because the body will register it as deprivation and will slow down your metabolism, you don't want to drop weight fast as you will end up with lose sagging skin, the skin has to have time to tighten back, my sister made this mistake when she lost all her baby weight in two months after her pregnancy, however my cousin took up to a year, and she had no sagging skin. Of you will have to find a balance between exercise to lose weight like fast walking, or running, and toning exercise, because it you simply do weights, then you will build muscle and that weighs heavier than fat, in that way you can't just watch the scales, you need to measure your inches.. The body needs fuel in order to run, just like a car needs petrol, so don't skip meals, but lessen sugar (carbs) and fat content. People who lose weight over a longer period of time are more likely to keep it off. All the best.

It depends. How much do you weigh and how old are you? (Rhetorical questions) If you weigh 80 pounds, then you'll never weigh zero as long as you are alive, so forget about it. Likewise, if you are over the age of 25 and weigh less than 190 pounds, it's extremely unlikely you would ever succeed at this goal. How about just try to live as healthy a lifestyle as possible and see where that leads?