It's also a bit of an ask with LSMs to take the train to 120mph in one go. You would need a much longer launch. The LSMs would practically spontaneously combust with the extreme amounts of power that would require to do it in the current launch space. This is because of the very high levels of heat that would be generated as they pump enormous emounts of electricity through the LSMs, to get the acceleration needed in the space they have, to get the train over the top hat. Very impractical.
A swing launch, while very fun, is also a practical way to get around the limitations of the technology. So you not only get faster launches, but use an order of magnitude less in electricity to do it. Which saves on power, transformer, electrical, cabling, control equipment and cooling of said equipment, which as is, will generate a fair amount of heat.
It looks great, hopefully Zamperla pull this off. It's an extreme use of the technology. But it looks like they are using it the right way, with a swing launch. So from a backseat partially educated guess, it appears that they know what they are doing. The way they have done it, is the right way to do it if they want to achieve said speeds with said technology.
This has to be one of my most excited for installations of 2024. Up there with Nemesis. Purely for the push in technology this represents.
The first bit if the spike is in.
Source: Screamscape.