Which story idea should I work on next?

I need some advice here folks. You see I have six different story ideas for after I am done my current two stories at FanFiction.Net, but I cannot decide which one to do next. I do not want to do another one of the same pairing as I am currently working on, which is Ash and Zoey for The Perfect Gift and Ash and Misty for Time's Changes.

The pairings and the ideas for them are as follows:

Ash and Cynthia: What if Cynthia offered to train Ash to be the best he could and instead of going to Unova, he accepted the offer instead? What would happen?

Ash and Erika: What if Ash was in Celadon City and just happened to catch Erika when she slipped on a patch of ice? What would happen?

Ash and Valdrade (OC used with the permission of SSJ04 Mewtwo) (or could also be different girl or a harem): This would take place in a alternate universe. What if Ash got Pikachu at age 10, but couldn't challenge any leagues until he had gone through the academy which took in all future trainers at age 13? What if he learned in the meantime he was the Chosen One and was trained in the art of aura by the legendaries before he had to get in and was given a necklace so he contact them at any time?

Ash and Anabel 1st idea: What if Ash accepted Scott's offer after he had defeated Brandon? What would of happened then?

Ash and Anabel 2nd idea: What if Ash decided to become a Frontier Brain after Unova? What would happen next?

Ash and Maylene: What if after the Sinnoh League Ash didn't return home to Pallet, but his aura drew him to Maylene in Veilstone City? What would happen then?

Which one do you do you think I should work on next?