Good Job
Going for 40 might not be a bad goal. Do you have a scangage? That helped me a LOT. You can tell what mpg's you got per trip. Using it I've found Hiways are bad for my FE. I still don't get that.
Also the longer you drive this way the more comfortable you become with some of the more advanced hypermiling tips. I just did my 6th tank (First tank where I've felt comfortable using EOCing)& got
48.58 It can't be right.
I'll have to see what the next tank does.