Runs With Ball Through Centre as a movement for a wing

Hi ,

I usually play with the 4-2-3-1 with two forward wingers and a trequartista. Going at higher levels, I notice that the two wingers are lesser effective, so I am starting to consider if to employ two second strikers in the central or in the side positions. The idea is that the two wingers should cut in the middle the opposite defense, perhaps out of position as attracted off by the attacker. So a couple of questions:

a) This is acted better by two wingers with the movement "Runs With Ball Through Centre"/cut inside or two central players?

b) Ideally ambidextrous players would be perfect, however is better a right foot player forthe left position (and viceversa in the right position)?

Regards

- Atari