Which one is better? Give a developer specs to develop prototype or code it myself(even though I am beginner) and get them to enhance it?[I will not promote]

I have an idea which utilises Unity with AR and would like to know which option is better. I am trying to figure out if it’s worth perhaps giving the developer some specs on my project and they produce the MVP for me or I try it myself? If anyone has experience on this, can you please advise?