M.B.
Hi H. :)
It sounds like you have a smart little guy there! :) I would very much recommend waiting until he is two then try the doll method with him. (Potty Scotty) I used this method with my son and it worked really really well! He was potty trained in one day and it was fast and easy ;) The only problem we had was that my son just didn't want to poo in the toilet. The pee was fine but he didn't get the poo thing. So I waited until he went his pants and then backed him to his toilet and kinda flipped the poo into it. He was shocked and said, "No! Make messy!" I was like---ah ha! So I took him around the house and showed him that toys go in the toy box, dishes go in teh cupboard, clothes in the closet and poopoo goes in the toilet. He totally got what I was saying and we've had zero problems since. :)
You should have no problem training your son. His early interest is a good sign that he will be ready when the time comes. When you get the chance, do a google search on potty scotty. I got mine on ebay but they sell them all over the net. :)
Best of wishes,
M.