Honestly, get on a quality calorie deficit diet and mostly just walk for now, do like a dedicated 3 to 4 miles per day, every day, in addition to your normal daily routine. After that add in some basic weight training with a trainer. Once you're comfortable, focus on calorie deficit with then higher intensity cardio and weight training. As you continue to lose weight (you'll be a year out now) phase into compound movement heavier weight stuff: squats/deads, bench press movements, rows, etc. They work more muscles at once and BUILD muscle most effectively. Nothing burns more calories than simply HAVING MORE MUSCLE. Fat burns nothing, muscle uses energy with every movment you do. When you're 18 mos out, THEN add something like carderine. Get to 2 years out THEN consider SARMS to help your progress. Look at it this way: your health became this way over time, the solution will also be over time. None of these compounds are magic. They help, but not as much as you might think. It's the woek that does the magic. Focus on dedicating yourself to the long haul then add the helpers later. Also, don't think of it as a "diet". Diets fail because by definition a diet is a temporary change from what you do normally. Think of these as healthy permanent changes to your daily habit. If you do this, you will succeed.