Hi,
My son was 18 months old when he saw his dad use the bathroom, he thought that was the greatest thing in the world and wanted to emulate it. From then on he was very intrigued with going potty in the big toilet while standing up.
Everyone told me he was to young, it's just a fluke, his interest in it will pass so don't waste your time, etc.
My gut told me to go with it and so I did.
By the time he was two he was out of diapers daytime and night
time. He rarely ever had mistakes even at night, maybe 4 times in his little lifetime (he is 7 now). He was in a preschool class two days a week at age two and they were amazed that he was out of diapers.
It is not the norm this early but certainly there are kids that do it.. Go for it if you are up for it and if not you have PLENTY of time.
One little tip. I kept a potty chair in our family room on a plastic mat , along with one in the bathroom. So if he had to go he wouldn't have to go so far and it was a gentle reminder seeing it.
Good luck, keep us posted on how it goes.
M.