I'm chuckling. Two years ago with a 5er I decided to raise the toilet due to my knees. Well, heck! Since it was in the shop I told them to order me a 17 inch toilet. Then I picked up a riser and installed it. We headed out. Several weeks later I removed the riser. DW did not like sitting there with her feet a few inches off the floor.
Be careful what you ask for. Measure twice, install once.
The installation was not problem. As a matter of fact I was able to secure the flange better with through the floor bolts versus those inky-dinky wood screws.
Wayne MSGT USMC (Ret) & Earlene (CinCHouse)
2008 Winnebago Destination 39W
It is what it is, and then it is what you make of it.