This isn't really the time period that or area of armor that I build. I do mostly A.F. Vietnam armor and some WWII things. But here's a thought. I'm not sure how much you need but what about using P.E. ship's railings? Maybe 1/350th or 1/200th might do it for such a small scale. Maybe someone has some left over sections. Check the part dimensions to see if it would work.
Have you checked to see if that armor come in 1/72nd? I'm not exactly sure of the size difference between the scales, but it's a thought.