The Nexstar is a good plane but it definitely isn't the only RTF trainer out there. I'd look at all of the other options. You may save some money by not getting things you won't use like the AFS, LE droops, speed brakes, etc.

I owned a Nexstar that liked and a Tower Trainer ARF. The Tower Trainer was the better flying plane in my opinion. I've also owned a World Models Sky Raider Mach-1 and I think it was better than both of them.

There are a ton of good trainer options out there. Also, don't rule out the ARF route rather than a RTF. You can get a Tower Trainer ARF, OS .46-AX and a Futaba 4-channel radio for under $300.