Yes. There is no doubt in mind that he would succeed. I wouldn't call this an alternate timeline, so much as alternate dimension and continuum. One outside the Alpha timeline and all others at that. [Which bothers him. He needs to become familiar with this pocket dimension and he already feels his omniscience being held back here, though not entirely constrained.]
If anything, the moment we get out the plan will continue as normal. Until then, you'll have to wait.