If you're planning to raise more for potential retries, you'll want to look for a Pokemon with a certain nature: Modest, Mild, Quiet, and Rash provide a boost to Dry foods and are the easiest to raise for Beauty. You might also want a parent with an egg move that you might want to help you in contests. There's not a lot to choose from, but there's some nice ones like Haze and Light Screen. Feebas also has access to a few tutor moves in Platinum, though they probably won't be useful for you.
Other than that you probably won't really need anything aside from the right nature. Just give the parent an Everstone, and the nature has an increased chance of being passed down. You probably won't need a nature either unless they don't like dry berries. Just make good poffins, or in the case of Platinum, buy them at the Veilstone Department Store/