Just don't get a seat to low and you'll be able to see most if not all of the track...Everytime I went I sat about 1/2 way and I have sat at almost every turn and once on the start finish line...They were all good seats.
I was thinking that pit side - 1/2 way up sounded good, but when I went online the most expensive seats were on the ends. So I wondered if you could see the corners and the whole track better? Usually the most expensive are the best?