Hi, I stumbled onto your wishlist, and I do have a few of the ponies listed, which I am selling. I'm still in the process of putting up the official thread, but they are for sale in the meantime if you wish to PM me.
I have:
Cha Cha Llama:
http://mlparena.com/index.php/topic,371406.0.htmlBaby Crumpet (only the pony, no playset or accessories):
http://mlparena.com/index.php/topic,371441.0.htmlBaby Ember--Ember's Dream version (pony only, no playset or accessories)--
http://mlparena.com/index.php/topic,371545.new.html#newI do not have any of the seaponies you requested, but I do have one of their floaties.
http://mlparena.com/index.php/topic,371442.new.html#newIf the Wiki I looked up is correct, it's Sea Shimmer's, so that way you can at least get both if you find the pony without the float somewhere.
These are just the PC threads, but they are more or less the ones I was going to use in the sale thread, and also to get a rough idea of the price. Just let me know if you are still interested.