It's OK to have your own thread anywhere on here. You may even find it helpful having your own food diary for a while anyway.
Your exercise looks good. I started out much the same way and didn't change it much for a while. As I became fitter I walked faster or walked further. Then as it got closer to winter I started getting exercise DVD's in case it was cold or raining and then I still got to do some exercise for the day. This basically gave me no room for excuses. What I am saying is build up slowly if you want to do more and don't underestimate how good walking is for you. Not to mention completely free. I think it is a great start.
You may want to look sometime at strength training as this can aid in weight loss too as well as other benefits like improving bone density. This article
has some info that may be helpful.