No designer is needed
The DIY chandelier is al made out of standard lamp parts, that you can easily get hold of. Use the four light cluster socket with pull chain switch, or the two or three cluster socket, and build on from there. More light bulbs are added in pairs to keep the chandeliers in balance. 4 bulps, 6 bulps, 8 bulps, 10 bulps, 12 bulps... No designer is needed.