Especially for a Caravan, you will be flying around single pilot.....don`t know of many that would put a fresh CPL holder or any low timer alone on a Caravan.
You may have some luck on a Britten Norman Islander, I don`t agree with this, but in Guyana there is a company (Roraima Airways) where you can start on the Islander as Co-pilot, paying for each hour (I`s pretty cheap) then when you get to 800 hours you will be upgraded to capt if they need pilots....