Here's probably the best toilet for your needs. The Toto Supreme ADA (16-1/2") This is a one piece unit which makes cleaning much easier. It is also low profile, measuring 25-1/2" from the floor to top of tank. A soft close seat is included in the price. Terry sells this for $469.99. Your local price may be higher, but you would have to check and shop around a bit to see. the number of this unit is: MS864114L. BTW, ADA height is just slightly higher that the Comfort height. This toilet requires a standard 12" rough-in and is available in Cotton White only.