Boca burgers for vegans and losing weight?

my girlfriend and i are going vegan this weekend and just got a 16 pack of Boca Vegan burgers, thoughts on them? we are cutting out sodas STRICTLY WATER, eating after 9pm , no eating fast food whatsoever, no junk food. Trying to loose about 10 pounds by this time next month ( if not more) do you think this is a sustainable diet for our goal. Any alternatives besides exercising.?