ethe....Those are lofty plans. They would be too much for me, but then again I'm a couch-potato Wimp.
Why don't you start off with Baby Steps? Water Fast for 24-hours, then report back here. Good luck......WY
P.S. At 5'3" and 165 pounds, you could stand to lose weight, but do what you're comfortable with, not what other people say.