I cook most of my own food, so I make up all the ingredients and add them to the spreadsheet. I also do a few custom food cos the builtin stuff is all leftpondian. For exercise I just add the time I do biking (and lifting when I can rescue the weights from the garage), but ignore the calories. The calories from exercise are very arbitrary anyway.
My current weight and goal is very similar to yours. i've done this before a few years ago (got to 173) so I know it's possible.
It's downhill all the way