Stepping up to a Turboprop (PA46)
with an aircraft like that, you will no doubt wish to fly internationally so the best route forward would be to get an actual FAA ticket.
In that instance, there is no need for a type rating but there is only an insurance mandated requirement for training on type which is much simpler and far easier on the finances also.
You can attain the relevant training in the US and simcom would be the cheapest option or alternatively, if you have an Nregd P46T, then I have contacts who could issue the training on type both in the UK and in the US.
PM me if you need any assistance.