If you have time and tools to completely service and properly assemble the bike before you ever start it up, the RX3 makes a great first bike. It is made in China.
Unlike most Chinabikes, if you go through the bike end to end before hitting the road, then stay atop the maintenance with the proper materials, you'll have a great ride for many miles. Building an equivalent motorcycle from a Japanese or European maker would cost twice or triple as much, so consider your discipline, study, and development of mechanical skills an investment in your ride, your finances, and yourself. You won't regret doing it right. It is definitely worth the trip.
A gentle break in is necessary to protect the brakes from overheating, and therefore warping. Or maybe the hubs are not properly machined to provide a flat mounting surface for the rotor. Check your rotor mounts before starting the bike. CSC has already posted videos to get you through the process.
CSC seems to have been very conservative on the RX3's capabilities right out of the box and has already made several design and maintenance changes to improve the rider relationship. Such changes seem to be very positive and successful, so the newer version seems significantly improved.