Conversion questions

[naynay12]

Just a couple of questions,first off i have a 2s and 3s turnigy pack,they are both the same discharge and mah,i haver a turnigy accucel-6 charger.Can I charge the packs, aswell as run them together by using this connection ? http://www.hobbycity.com/hobbycity/s...ad_(2_x_3S)6S_
Also i will be running 5s with the mamba 2200kv motor and the original 47t spur on my savage 4.6 conversion,and probably a 20t pinion.Will the hpi 20t pinion hold up ok?
Also at the moment i have the 2 speed tranny,now for it to hold up,will i only need the "HPI Idler Gear 44t/Shaft Set",to convert the tranny to one speed and it should hold up right??