That would be fine but when I try to put just a little more in slowly (after letting it sit and putting little by little in) I still can't get more than 32.5 usually. The 32.8 was after running it dry and putting maybe a gallon in to get me to the fuel station.
I can get 44.5-45 gallons into my Excursion (44 gallon tank). Of the many F350s and the F650 that I have used, it has always been that empty is empty and you can put close the capacity if not more fuel into the vehicle's tank.