I just had a thought... with circular supports, maybe B&M are being called upon for this project? I think most B&Ms have circular supports, and Parques Reunidos is a pretty big company, so I'm sure they could probably afford a B&M if they wanted one. As for what sort of B&M, I reckon with the numbers we have, we could potentially get an 8-across dive coaster with 3 rows, as that would match the 24 that we have been given. Also, Valravn and Valkyria both have 3 inversions, so it's highly plausible that Kennywood could build a triple-inverting dive coaster, matching with the number 3. And I can totally see a B&M dive with a 197ft lift hill and a 220ft drop or vice versa. A 220ft drop would even claim them the record for the world's tallest dive coaster drop, as Valravn's is only 214ft. And if SheiKra at Busch Gardens Tampa is anything to go by, then a 220ft vertical drop into a ravine would be pretty damn insane!
I am literally just speculating off of what we have at the minute, though. I think we need more numbers before we can come to some sort of conclusion. One thing I do think, though, is that this is definitely the most intriguing 2019 project so far, and I reckon it could be in with a chance of winning Best New Ride of 2019 at the GTAs if it's particularly good.