Psh, this is just how the park always operates. Wait until the very last minute to start construction with very little going on, then begin to rush to complete the ride at the opening date as it comes nearer. This increases the chances for a problem or something to go wrong, and when the ride doesn't open on time this "problem" is what the park blames for the ride opening delay, not their own god awful planning. Generally these are the issues that cause a delay of the final opening of the ride.
Not saying that's what is going to happen with this ride, but it's a bad habit to get into especially considering it gives you minimal time for error correction if a mistake arises or it doesn't operate the way it's designed (which with Magic Mountain, ANYTHING can happen, and it usually does).
With this park the best thing to do is just wait until it's actually open. Anything other than that like planning a trip before the ride is actually operating is a gamble IMO. To me it doesn't seem like there's that much involved in a ride like this, but we'll see.