Hi thanks for the reply,
So parks we have been to before:
Universal, Islands of adventure, Busch gardens, Seaworld, all of the disney parks, all of the disney waterparks, alton towers and thorpe park in the UK. Loved big adventure rollercoasters but have never been on any really big 'hyper' type coasters.
As far as getting around we are happy to drive or fly (probably preference is a single flight in and out of the USA from the UK and then rent a car for a couple of weeks. Not adverse to relatively big distance car trips. We would aim to do a bit of sightseeing yep based around the chosen parks we want to visit.
Thanks,