I got started tracking in my E46 M3 'vert. An F83 will do just fine with casual tracking, but it's a jack-of-all-trades-master-of-none situation.
As others have pointed out, not all groups will let you run in a 'vert. Make sure whoever you're planning to run with does.
Know that you're taking additional risk by tracking a 'vert. In the (unlikely, but non-zero) event of a rollover, the coupe/sedan are much safer.
It also won't be as good on-track as the F80/82 - it's heavier and less rigid.
But it can't be beat for top down motoring on a beautiful day
