Moving from the CJ4 to Citation x/10 you need to get a co pilot by law.
Is the Citation X that much of a step up in work load. Obviously systems are more complex but it seems better automated.
So what would you need to have a co pilots certificates, private non commercial op. Would a PPL with Instrument ME rating and a SIC type rating be enough. How does the SIC type rating compare in training.
It seems to me from your comments that you are concerned or worried about conducting multi pilot training / ops.
Why would you want to fly such an aircraft using a PPL with instrument and sic ratings when you can obtain a full pic rating during the type course, what experience and licence do you have and what registary will the aircraft operate on?