Parma Airport (50S)

My first go-around! Crossing midfield from the south I decide to land on 12, the winds were light and the runway is short. What I believe happened was that I was too close to the runway on the downwind leg, then turned my base too early and ended up way high as I approached the numbers. With the second attempt I’m turning left base onto final when I look down on my clipboard and realize that 12 is right hand traffic (which I had circled but didn’t notice prior). I decided to proceed  figuring the damage was already done and I was a bit embarrassed to broadcast my second mistake on the CTAF.

Questions: Why is this right traffic for 12 with that big tower in what seems to be the pattern? What should I have done in that last minute scenario when I did realize I made a mistake but was already on my base leg?