Noob looking for advice

Hey all, I have a decent day job and most days it is alight. I have just always wanted to go into business for myself. I enjoy cooking and have for a long time thought a food truck would be a good fit for me. Something I can ease into slowly and if and when it takes off it can be a full time job.
 
The things I am debating on is whether or not to get a pull behind concession trailer vs a food truck? Pros and cons? Concession trailers can be had at a good price where as a food truck obviously can be a quite a bit higher.
 
Also, are there company's out there that specialize in converting trailers and ups trucks into food trucks? I have been unable to find anyone in my area.
 
All in all just looking for some general advice of getting into the business. I know I still have a lot of research to do.
 
Thanks all,
 
Kyle