Cedar Point are usually pretty good at trying to get things for the start of their season, which is at the beginning of May. Might be slightly different here, as clearly it's a relatively last minute project, but so long as the weather stays on their side I can't see it taking too long to get the rest of the track up.
The bigger questions is will TT2 be ready for this season, and if so when? You'd think they might want to stagger the opening of these, seeing as they're both effectively new.