NO! 6 series/parallel, 8 series/parallel. You connect each pair of modules in parallel and then put them in series so your 6 module would be 2P3S and your 8 module would be 2P4S You then hook the two "packs" in series to give you 2P7S keeping in mind that each module is actually two Cells in series with a total max voltage of 8.4V. Your BMS will hook up as if it's one big pack. If you look at the wiring for 14 module packs you just split that as close to the middle as possible (6/
and join them with a cable where you split them.