While the Honda CR250 is a powerful and capable dirt bike, it may not be the best choice for a first bike, especially considering your limited experience with dirt bikes. Here are a few reasons to consider:
Power and Performance: The CR250 is known for its high-performance two-stroke engine, which can deliver significant power and torque. As a beginner rider, it's generally recommended to start with a bike that has a more manageable power delivery. A bike with excessive power can be challenging to control, especially if you're not accustomed to dirt bike riding techniques.
Size and Weight: The CR250 is a full-sized dirt bike, and at 16 years old and 5'8" height, you should consider a bike that suits your physical proportions and provides good ergonomics. A smaller displacement bike or a bike with a lower seat height might be more suitable for a beginner rider.
Skill Development: It's important to build your skills progressively when starting with dirt biking. Beginning with a bike that's more forgiving and easier to handle will allow you to focus on developing fundamental techniques and building confidence. Once you have gained more experience and mastered the basics, you can then consider upgrading to a more powerful bike.
Considering your circumstances, it might be more appropriate to start with a bike like a Honda CRF250F or a Yamaha TTR230. These bikes offer a more manageable power delivery, lighter weight, and are better suited for beginners. They can still provide plenty of fun and enjoyment while allowing you to develop your skills in a controlled manner.
Additionally, it's always recommended to take a dirt bike training course or seek guidance from experienced riders to ensure you learn proper riding techniques and safety practices.