Good luck!
I'm sure your wife will love your new look!
Also it's not only for the appearance but importantly your overall health.
I'm a health freak so let me give you some tips.
You need to exercise according to your body type and level.
Extreme exercises should be saved for later.
Diet is very very very important!
Proper diet alone can shed so many unwanted pounds.
30lbs in 30days is very achievable, with diet you can exceed that.
If you are really obese, exercise that require you to stand for a long time can cause damage to your joints. So consider bikes, swimming, ball exercises, or certain machine until you feel more comfortable..
Anyways hope you the best!