The carrier kits come with the brackets, outlet for the fitting, bolts to mount bracket to wood studs, chrome toilet cap nuts, and rubber seal.
Of the standard wall mount toilets, the Glenwall would be a good choice.
I sell quite a few of those in Seattle.
They have a little thump when they flush, but the also never clog.
Making it a wall hung, will improve the floor situation.
I grew up with wall hung toilets, there are some advantages to them.
Now, since there are so few choices in them, I plumb for floor mount bowls. It's easier to get a bowl to flush down, then out the back.