when attempting your first class, I would highly recommend trying WA70 ( used to be called fita 70m)
that is 6 dozen at 70 Metres on a 122 face.
there are a few reasons why I say that.
1. its not quite 80 yards ( its actually 77 yards) so not as much of a step up from 60yards you are probably used to
2. its all at one distance, so no moving bosses, and potentially forgetting to change your sights / get it wrong and losing points
3. its 10 zone scoring, so when you hit a red, and get an 8 it feels like you are gettign a bonus point ( instead of all reds being 7)
4. to get a first class you need to score 437 from the round which breaks down to 36.41 per end or just under 6.1 per arrow, so basically 5 x6 and 1x 7 and you have nailed it.
5. Its good practice for when you enter the Olympics ( we can dream)
I got mine a couple of weeks ago ( got the third required score doing a long national though) I keep looking a Bowman and running away screaming from the 100yard requirement ( I dont think there are any rounds for BM that dont need 100ayrds are there?)