Is drain acceptable?

I want to replace two 3.5 gal/13L toilets that work well with two lower volume toilets.
One toilet has 25 feet of 3.5 inch OD drain pipe from the toilet to a 90 degree turn then it runs 8 feet then it drops vertically for 4 feet where it exits the house to the septic tank. The second toilet drain runs 8 feet then drops 4 feet and exits the house.
Will lower volume toilets like the Kohler Cimarron or Caroma Caravelle or Toto Ultramax work properly with these drain configurations?

IT is no different than the way we install the drains today, and we use those same toilets with them.