This is great stuff guys, thanks!

The water isn't a problem - I drink that much routinely (finish off a few bottles of 1.5 liters of water a day (I can gulp one in a shot))

I do opt for whole wheat vs white flour (brown rice, whole wheat pasta, etc...) Plus turkey meat for protein. Been hooked on Grape-Nuts too lately.

OK, because I'm dense and like to double check things:

Based on my calculations above I should never drop below 2,828 calories (my starvation mark from above) unless I drop weight/increase muscle mass? And if I do cycle (thereby increasing my activity level) then that number needs to increase by whatever my activity dictates?