RE: From NexStar to Four Star
I would definitely have someone else maiden it and trim it out for you. Once it's been trimmed, you should have no problems with it. In many ways, the Four Star is easier to fly than a trainer, because it goes exactly where you want it to go. The biggest change will be that you have to level it out yourself after a bank or a roll, it won't level itself.
Just make sure you do a lot of practice approaches and touch-n-go's to get a feel for how it lands.
I started flying my Four Star about a month after I soloed my trainer. You are going to love it.
Good luck.