When I started in the early 1970 there were many photojournalist who used medium formate, the Rollieflex was very common as were press cameras, I think some of the best photojournalism was done with M/L format. My advise to travel light, no more than 2 or 3 lens, a good compact flash, a lightweight tripod and a couple of backs. Take a light green (for portraits) and light yellow filter, get to know the folks the story is about, you may need to spend days and even weeks to really get to know the story.
Sounds like found,
Paul
Paul