It's funny - when I was a kid, we had a pinata in our classroom one year that had lots of candy and some change in it. When it finally broke, I ran out there and grabbed exactly three pennies and nothing more. All of this while kids were filling their pockets with anything they could find. Why? Because I had recently counted my pennies at home and had 3,997 of them. I knew it was an infinite collection, but I really wanted to have exactly 4,000 for a brief period of time. Then I kept collecting for the future after that. I've always been that 50/50 J&P. I want them both. But I am slightly more P in the end.
The J in me makes the lists. The P in me puts them aside and forgets to use them.

Great Pinata Story! That is a lot of 'J' for a P to have, but it a way, how P is it to want to experience every nuance of having a collection, including the feeling of having an large, entirely round, number of coins. A J would be 'more anxious' until the goal was reached and 'return to a more relaxed state' after achieving it. How did you feel while waiting for the Pinata? Did you consciously have a plan the grab the 3 pennies for your collection? Would you have accepted 3 pennies for a different source if you say, found them on the street in February, or did they HAVE to be from the Pinata? Was it a tremendous release the finally have reached your goal?
It's perfectly fine to be a P with lots of J in the soul. In general the MBTI folks have lots of room for folks to have lots of variety in their behavior and ideas, but they seem to feel that it's important to learn about oneself by knowing the 'factory setting' that one was born with.
My DH is a SJ, and also experiences numbers in a way similar to how I experience visual art. We celebrate all the 'fun' dates on the calendar because he notices them. I'm happy if I know the day of the week! I'm not really sure which Letter of MBTI is involved with 'tasting numbers' but I'll let you know if I figure out anything.
Love and More Love,
Grinity