No idea what APRI is, I only know a little bit about AKC shows. AKC is the same, your dog is held to breed standards.

If your doxie isn't super high quality, it can get very discouraging. It can also get pricy to show a dog, since you have travel time, site fees, show fees, etc. Since it's a female, you'll also have to worry about when she's in heat, as that can affect the coat, etc.

If it's a smoothcoat, you'll want to keep the nails properly done, the coat clean and probably carded, and of course, the dog in proper weight. If it's longcoat, you have grooming to worry about, and you'd want to either learn to do it yourself, or you'll have to find a SHOW groomer, not a pet groomer.

Hope this helped. Showing can be great fun, but it's not cheap and can get time-consuming also. Some dogs love the travel and shows, some hate it. Never know until you do it!