Heres the problem with many of the parks you are suggesting, they are for sale. SFI isn't going to add a ride to a park that is potentially for sale. It would be a complete waste of money.
The most probable place this thing is going is SFA. Why? There are a few reasons.
1) The park was screwed over with Batwing and SFI never completed their deal of adding a new coaster every year until 2004.
2) The Sea Coaster is being removed, creating a lot of space.
3) SFA is Shapiro's "baby"
4) The park needs a new attraction to bring in attendance. That place is EMPTY.