I know you have asked about the lawyer but in all honesty, the K-1 process can be done by the couple. I am currently on a k-1 request to bring my fiancé from Brazil and we have done everything ourselves. It will save you a lot of money on the long run and it is a fairly easy process. If you can read/follow directions as well as organize documents in order that is requested it should be a smooth task. For the entirety of the process, myself and my fiancé have read a lot and have done it all together. By doing the application process this way we both gain knowledge as well as we are aware of what needs to be done and what has been done. Nonetheless, if you have the financial means to get a lawyer of course go for it. Just be mindful, you will have to also be on top of the process even if the lawyer is pushing paper. We are all humans and can make mistakes.