Thanks for the info.
Also, what about if both of those packs have same C, ie 40C.
I know that the 4s packs in parallel with give more amp discharge.
Is it worth to have double the punch than 2s packs in series to disregard the weight 4s packs have. The total output will be 4s for both setup, but 4s 40C packs will have 320amps compared to 2s 40C packs in series with 160amps discharge.

Will 160amps more discharge rate is enough to oversee extra weight of the 4s packs or will they have little gain.
Thanks again.