Have you tried asking on Activity Stream - The Home Shop Machinist & Machinist's Workshop Magazine's BBS or Practical Machinist - Largest Manufacturing Technology Forum on the Web?
Those are the two sites that spring to mind where you'll likely find an answer.

Failing that Bijur have a good guide on Single Line system design at http://www.bijurdelimon.com/fileadmi...istance_BR.pdf

Out of curiousity, where are you getting the parts?
I'm currently waiting for some new pipe to arrive to fix a leak to see if my autolube is working as it should, however I'm expecting to need some new metering units.