Yes the Wp Sc8 is fine obviously up to 4s and is still fairly quick.
I assume you have these: http://www.hobbyking.com/hobbyking/store/__17273__Turnigy_nano_tech_5300mah_2S2P_30_60C_Hardcase_Lipo_Pack_ROAR_APPROVED_.html
If so I used to use two nanotech hardcase lipos together, I would one on top of the other then had longer velcro straps to go around the battery tray and both lipos.
Then I had two 4mm male bullets soldered onto the esc and then made a joining lead with two 4mm male bullets on each end.
As for pluging it in make sure you plug the positive lead from the esc into the positive on one of the lipos then plug the negative from the esc to the negative on the other lipo, then plug the joining lead into the remaining female bullets on the lipos.
Here's a picture I took for a member a while ago which may help you as well:
As for motors I would go for something like one of these makes:
Castle
Sirius
Leopard
Tenshock
Hobbywing
Etc.
Thanks.