What should my 3rd slot be if I don't have Mblade and MC is being used already?

I do have E0S1 Saber, but don't have Mblade, and my Welt is only E0.

Mc is currently locked on my Eva team since there is no 5-star replacement yet

My options are: E1S0 Robin, E0S0 (S5DDD) Tribbie, E0S1 Sunday, E0 Welt