@GillyTook, that sounds like a good plan!
Regarding Kitchen Quests. At least there's no penalty if you don't feel like finishing them. I recommend price checking each of the 3 or 4 items your asked for before you buy any. Lately I've been getting thrown some curve-balls when trying to do a Kitchen Quest. There'd be 2 or 3 reasonably priced items requested, 1k-2k or so, and then one that is over 10k. While it'd be worth it NP-wise to try it for a random stat point, I only need to work on my HP, so if I get a worthless item or low amount of NP back, or the stat point goes to some other stat, it's not very good. So I keep checking and hoping for a lower priced-quest. As I'm trying hard to save my NP to upgrade my battle gear.
My point is, just be wary of how much each item costs and do what you feel you can afford per quest. You can complete up to 10 on-site quests a day. Snow Faerie, Edna, Kitchen Quests, all count toward the 10. The counter resets at midnight NST. And the time to complete the quests seems to be between 2 and a half to 3 and a half hours pretty often.
Good luck!