First off, I'm glad this thread was helpful to you!
LOL Secondly, that's fine, you should see my peophin's stats, ALL of his stats, except for movement and level, are over 3,000. Like you, I use Faerie Quest Fortune Cookies, and I've only been ignoring the Air Faerie quests. At these stat levels, that your pet and my pet have. The only stat that really matters is Endurance/HP. I do the non-HP, non-Air-faerie quests, as long as they are not very expensive, just to kind of keep things somewhat balanced and JUST in case TNT extends the Strength and Defense boosts beyond 750/16. Given the power of some opponents, like Snowager even on Medium difficulty for example, they really should give us an increase in the maximum boost, imho.
But it's far more economic (in NP) to only do those that will or might increase your pet's HP. Though, you might complete only a couple of quests per cookie then, making it's overall value (NC-real money) lessened, imho.