I'm 5'9 and currently weight 250 pounds, I just meet the morbidly obese category. I have a friend coming over by August 2018 and we plan on hiking/backpacking, can I reach an acceptable physique by then? Also, what exercise should I do, how many days a week should I do it, and how long per session should I do it? Thanks for the help guys, sorry for asking so many questions.