Hey R3N. I'm guessing your prone to charge characters, or those that maybe don't require as much momentum as others; it's interesting, and probably smart that your 3rd choices are more momentum-based. I use Kim the most out of all the 3rd place rotations you've got, but I'm curious which one gets you the most wins.
Right now, I'd want to say Iori or Kim, as having more rushdown characters can really even out your playstyle (assuming you're not rushing down with Clark and Ash a lot). Kim I think can be placed in any position on a team and be a good asset. Iori, more 2nd or anchor for maximum effect.
What's your playstyle like usually? Aggressive, patient, based on who you're fighting?
I'm very prone to charge characters there not who I intended to actually play with to start with. Right now I'm tending to get more wins with Kim, Iori, shen, in this order. I can't really get some of (claw) Iori and Shen's links/combo right when I have the opportunity. As far as my playstyle I would probably say I'm aggresive until UI'm up against a good zoner then I'm patient. Most of the time when I play clark I never use supers with him, my sceen here everyone uses zoning characters or someone that's normally faster then him.