This one is standard height. You can get a elevated one. See your retailer at Home Depot.
This is a floor exit toilet sits directly down on the sewer pipe in floor.
You need a wax ring or one of the new seals to mount the toilet to the sewer pipe. You may also want a new hose to connect the water but make sure it is not to long. I had to take back the 12" hose and get a 8" hose. The toilet comes with a seat and mounting bolts. I used two sets 3/4" blocks (3 per set) to get the toilet lined up with the mounting bolts and then slowly remove one block from the front and then one from the rear to get the toilet on to the bolts. The toilet weight 100 pounds and in the tight quarters of the bathroom it required two of us to install it.
I have support bars on my old toilet which helps old people get up from a seated position and the original seat would not allow the attachment of these bars because of the way the seat attached to the toilet. I went too Home Depot and found a seat for an elongated toilet which worked and also had the slow closure that the original seat had but a different mounting method. I don't know if this answers your question.
There is a difference in the height of the seat, not the toilet itself. If you click the link above on this home depot page for this toilet, for the installation pdf, you will see the 2004 is listed as "Normal height" and 2034 is called the "Right height" so I think (you will need to look and double-check me on this) but I think 'normal height' is a toilet seat 16.5 inches off the ground and the 'right height' is 15" off the ground. I bought a toilet back in Feb for my mom that was 15" but I was afraid that the rest of us 'tall people' would find it hard to use, but not so. So it's just a personal preference I guess. I don't know about the seat being included, but as I said, the installation guide definitely says they are different seat heights. Hope that helps.
800 seems right because it is slightly less powerful than a standard champion which is rated at >=1000. However 800 is still great compared to older toilets (10+ years old) which are rated at ~300. My Champion one piece has not had any backups compared to the frequent backups of old toilet.
I'm not exactly sure what you mean by a 10" rough in I am a homeowner DIY person I have installed 6 of these toilets in different homes and all fit with no problem . If 10" rough in is standard ( I am assuming the distance from the wall to the sewer pipe in floor ) then it should fit. I have installed 6 of these champion one piece toilets in 3 different homes and all fit just fine. the only difference is some water supply come up from floor and some come through the wall , I have had no issues with them either.. Hope this info is helpful. Also use the heavier wax ring without flange, I like the wax ring with flange but I once found the stack in floor was a slightly smaller and wouldn't allow the toilet to sit all the way down. If you use the wax ring with no flange it should sit right down seal tight and no wobble at floor. One last thing these toilets are a little pricey but in my opinion well worth it AND quite heavy I think they weigh right at 100 lbs.
About 5,700 grams per flush (5.7 kilograms)
I live in Minnesota so do not know the regulations in NY but the size of the trap is what I like about this toilet...bigger than most and does not get clogged up.
C4, Generally, we would recommend using a 10" rough in model. There is some leeway when installing but an inch would be pushing it. To be sure you could dry rough it in to see if it would fit. Sincerely, your American Standard Consumer Connection Team