I'll take anything I don't have and is a fair trade to you :) I'm not that set on anything specific cause none of the ones you ask for are shiny or events hehe. Unfortunately right now I only have a lv.80 and lv.100 Mew but I will keep an eye out for you/your friend.
Also, I don't suppose you would be able to find special Event Pokemon in my store that you are willing to trade for your Event Pikachu/Electabuzz/Magmar? You have to include the Event Surf Pikachu and Event Meowth to the list of those I have available as I have those too, just havent added them yet ;)
Also have a 6IV shiny Limber Ditto if you want it ;)