1) In this day and age, you might get dinged in competition if you don’t have a lot of hop flavor and aroma in your APA similar to what one might expect from an AIPA of old. You can enter it as an APA, but I wouldn’t expect it to score a medal because American tastes (even those of judges) have changed considerably over the past ~10 years to APAs with much more hops than they probably really *should* have IMHO.
2) Depends on the judges is right. If you try a Red Seal Ale, it’s an excellent example of an AAA that probably wouldn’t score too well these days because again, Americans love their frickin hops so much. It’s too bad, really. Again, you can enter it as an AAA, which is technically correct, but it will lose to other entries that have more hops. Gosh, I really hate how this all works but I do believe it is usually true.
3a) Not sure what to say on this one. My guess is, if your beer didn’t have a final gravity between 1.000 and 1.005, it’s not going to score as well as one that does. Judges expect a saison to be BONE dry.
3b) A little spicing is a very good idea in a saison, as long as it’s just barely detectable. As soon as it becomes real obvious, it’s not very good anymore. So be real careful with your spicing.
4) Enter your hefeweizen as she is. You’ll only lose one or two points for darker than style. Not a real big deal as long as it doesn’t taste super malty.