They're all about the same level as far as priority.
Obviously I put a little more value in more expensive items (ie- forest guardian Is typically worth more than a sea dog)

Okay:

4,000 diamonds
Autumn Regalia
Crown of the Phoenix
Fairy Dragon Wings
Bat Wings (Which was chosen from my design ^-^)
Seraph's Lavender Wand of Bliss

If there are items you're not that in to, let me know. (You don't seem like a bat wing person but never know)

Upping my offer:

Then my current offer is:
4k Diamonds
A pair of breedable MM Neph eggs
An Enhanced Griffi Essence
Avenger's Wings
The purple valkyrie owl
Lemonade sea dog

Just so you know, I'm currently leaning toward angelzrulez offer
I like your offer too, but I'm really wanting the owl of Valkyrie and the mm nephs are also quite enticing. Would you like to add to your offer?

Yup. I'll add:

Shadow Stalker (Jade Fire)
200 diamonds (total of 4,200 diamonds)

Let me know.

Just so you know, I'm currently not leaning toward either offer, they're about even in my eyes, so I'd like to think about it for a day or so, and get back to you if that's alright :)
Unless of course either of you have something to add :)

*mumble* I'm hoping to get this done tonight. Planning on going to the movies tomorrow and hate to be sitting there like "What if something was offered and he's already gone?!"

I'll add 200 diamonds (for a total of 4400), plus said items.

I'm happy to wait :)

Kyokai added 200 diamonds, putting her offer a little ahead of yours. Would you like to add anything?

Fair enough XD
Although, I'd give you a chance to add to your offer before I finalized my decision