!!! 45 lbs by June is a very real possibility.
WW isn't meant to be done without the meetings. Oh sure it's possible. But what really helps everyone is a good support group. Even if it's online. Like here!
If WW worked for you, you may want to give it a go with meetings. If you're looking for something a little less expensive, then you may want to try Calorie-counting (fitday.com).
The important part of sticking with something is deciding that you are going to, and finding something that you can see yourself using for the rest of your life. You may need to try several plans before finding one that suits your lifestyle & needs.
Exercise is very very important ^^ And it's good that you want to incorporate it into your life. Just remember that it doesn't always have to be big things. Especially not at first. Start with taking the stairs instead of the elevator. Parking farther away from stores. Small trips around the block. You have to MAKE time to exercise. Things will always pop up trying to pull you away from your routine, you have to take control to fit it in anywhere you can.
Make your health your top priority. You CAN do this. Best of luck!!!