A terrific set of possibilities for Django type of music is listed at JazzMando #. This particular page will at least get something under your fingers which will start to sound right / jazzy. The problem with a lot of Django (and other jazz) voicings is ... you have four strings to make a 5 or seven tone chord.
Depending on the size of your ensemble, it'll be up to you to choose which notes - phrases - progressions fit best. If you haven't explored Ted's remarkable site, I'd suggest spending some time looking through the various pages which have a wealth of information and ideas.
Mandola fever is permanent.