You have a problem because of the 10" rough-in. It is true that most 12" rough-in toilets will work on less than 12", but not as little as you have. The only low profile Toto toilets that will fit are the Pacifica and Dorian. Both of these use the Unifit adapter. The Unifit adapter will not work on toilets that are not specifically designed for them. Either of these two models would be excellent choice, but they are 1.6 gpf, not 1.28. You can read the details on these toilets on the Toilet Review linked at the top of this page. Click Review, then Shopping, then Toto to get to the list and specs on Toto toilets. I'm afraid your requirement list is too restrictive for many toilets, but if you could live without the 1.28 gpf, the two models mentioned will work quite well for you. Choices with 10" rough-ins are very limited as well, there is little demand for them, so not many are made. Toto is the only manufacturer with an adapter. The toilet that use the adapter come standard with a 12" adapter. The 10" and 14" are about $40 additional and you have to keep the 12". Again, these adapter only work on those models designed for them and those models must use the adapter. Hope this late night rambling makes some sense and will be of help.