Sorry for this. Calimsha could tell you sometimes I’m not even understandable in my natural langage 
It mean if you were to touch your corroder in one of the 3 top cards of your statck, aka 2 discard / 1 draw, then you have odds of 66% to discard it and 33% to draw it.
That means, since cards can’t jump oog, that each single copy of a card have 33% survival rate.
For two copy wanting at least one you’re somewhere near 56% (1-0.660.66).
For three copies wanting at least one you’re near 71% (1-0.660.66*0.66).
All of this is not 100%.
Being in a 2x breaker format, you’d need 0.44 * 3 = 1.32 recursion way to save your breakers + 0.66 (I’d say a strategic mandatory 1 but let’s compute the mean) to save Larla.
If you use 3 copy for recursive cards at 71% survival rate, you’d need (1.32 + 0.66 = +/- 2 heap tutor.
2 / 71% = 2.81 3x slots to acheive recursion before turn 12 (or you let the corp having unbreakable servers until your larla).
Aka with 8.45 recursion cards you’re sometimes have to much, sometimes have not enough solutions. 50/50 odds.
Saying it otherwise, that mean you’ve got a 50% to have all 3 breakers installed before larla turn.
Well, consistent, yes, sure. But I do have reliability doubts about this side effect.
Letting the corp doing what she wants inside her servers until larla turn is quite “not really efficient”. No, it’s quite half-shit in fact…
good news, you could spare clone chips influence only if your decoder is actually an AI (NOT eater) and use retreival run instead… 
Or else the corp would put an ice in front of archives and wouldn’t rez it until you show a retreival run. But you could also attack through Keyhole or Imp to prevent this.
Choice of decoder to be replaced by an AI is because of wraparound and swordsman. That would also boost your game start…