I ordered super saver thingie from Tower and and atm waiting the codes to arrive!

i am going to place order on slash 4wd and need your help a bit guys,
so i dont miss anything relevant from order..

batteries 2pcs, any recommendations from Tower(lipos),with trx connectors??

I have ordered battery charger(graupner ultramat 14) allready.

Lipo balancer for that??

Any basic stuff i need?? oils etc etc

all help welcome gurus!