I am very happy for you in the progress you are making. You are right to keep the focus on the two of you and leave the OW out of it. Don't give her power in your R with your H.
Remember, your R with your H did not deteriorate overnight, it was the culmination of months and and maybe years. It will take a significant amount of time to rebuild it as well, the road will be filled with many ups and downs. Enjoy the "ups" and be prepared for the "downs" so that they don't set you back and derail you on your journey towards full reconcilliation. Also do not settle for anything less than what you deserve in this R with your H. Settling now will result in resentment later.