Welcome to the forum and for becoming a proud owner of a weight-loss-
fitness journal!!
You CAN do this. Very good idea to throw out that pizza. We can ALL relate to how tempting it is to have kept eating it.
One
pound a week is an extreme possiblity. Three
pounds wouldn't even be too much to hope for. You're
goal of 275 by May is EXTREMELY do-able in my opinion.
And we'll ALL help you to try and reach it, I promise. There's more motivation in here than at a Richard Simons workout session.
Again, welcome to the boards and welcome to the start of a new, healthier and more fulfilling life!