Hello, I am looking into buying a new dirt bike. I am practically new to riding considering the last time I rode a dirt bike was about 7 years ago. I have rode some ATVs since then but that's about it. Since I am a new rider should I go with the CRF250X or the CRF450X. I am 18yo 6'2" about 220 lbs, I will mostly be riding out in the desert and dunes(Glamis) with some mountain trail riding. I'm not sure if the 450X would be too much power since i'm new.