It's up to you. If you are a novice, it is not recommended that you start the core now. Use it for a while first, and then go to see the skills of nuclear opening when you are free, so as to increase the probability of success! It should be noted that the power consumption and temperature of the graphics card will be relatively higher after the core is opened!
It is more important to remember that you should not just find a BIOS of RX470 to open directly, but find the most stable BIOS version. Many people have successfully opened it! Make a backup before opening the kernel!
Good luck:)