Hi everyone, I'm a beginner trucker. Can you tell me, how to solve problem with overweight / oversize? Maybe you know any company? What about price?

As a new driver you should probably stick with a standard 53' trailer and get some experience driving before going oversize.

I advice you to turn to the Omnipermits https://omnipermits.com/, they issue the permits for oversize/overweight in short terms, moreover they helped me with police and saved my money.