Recently purchased Omega 14 what parts do I need?

Hi everyone,

I recently purchased an Omega 14 as my first sailboat. I knew pretty little but already have done two sails with it and I loved it. I do think there’s some bits and pieces missing and rigged incorrectly. I don’t have a barney post for example. I attached some photos(the few i have), if y’all could help me out and help me find the stuff I need that would be amazing. Thanks!