I think too much information too soon can be overwhelming. I recommend the Mayo Breast Cancer book for a good overview, if you need an overview. But even better, wait for more information on your cancer, especially the Oncotype Dx test.
I believe lobular DCIS is a precancer: that it is not yet invasive. (I also had mixed ductal and lobular but both were invasive).
If you are ER+ there is a good chance you will avoid chemo, depending on the Oncotype.
While you wait for info, I think distraction is the best strategy I also got a few Ativan from my doc!
Once you have details, and a treatment plan, you can move forward. Get as many opinions as you need to feel good about your plan.