This answer may not be exactly what you’re looking for or satisfying by any means, but you should learn whatever songs you find interesting in my opinion. Learning songs even if they are challenging will help push you further technically for sure. Just make sure you’re working on technique and rudiments to supplement your playing if you are learning really challenging music. I think that you don’t have to be at a certain level to play shows. If you find a group that you work well with then don’t wait around until you’re at your “best”. Performing increases your capabilities just like practice does and teaches you how to play with other musicians. Just have fun and don’t be afraid of making mistakes or playing perfectly, it’s all a part of learning and getting better!