Edit: premise, i am going to build a 10s system since i have a 200kv sensored motor from @eskate.de coming my way. I currently bought all of the things i need to build an eskate exept for the battery and charger for the battery. I am going with lipos since they are cheap and i don’t have a big budget, just over 100 euros all shipped to italy, any recommendations? i was thinking either 2 of these in series https://hobbyking.com/it_it/zippy-flightmax-5000mah-5s1p-20c.html for 80 euros Or, i could buy 7 of these, open them up and rewire everything into two 5s2p packs on my own https://hobbyking.com/it_it/zippy-compact-2200mah-3s-25c-lipo-pack.html 70 euros
the second option gives me 4400mah 50C the first gives 5000 mah 20C
which one do you recommend?
or if you have a different option, gib it to me 
Other EDIT: note that since the 3s packs would be 7 i would start the process by tearing one apart and if that doesn’t work i will be running anyway a 9s2p pack with the 6 remaining still intact packs…