couple questions regarding e starter:

1. which receiver should i use? R4PII or R6NII (both GWS brand)
2. my estarter comes with 400 motor, which ESC should i use? ICS 400E, ICS 480E, or ICS 600E. (all GWS brand), and what are the differences?
3. is the GWS Rx can be used with hitec Tx? (same shift?)
4. which battery is recommended? 8.4V 750mAH Ni-Cd or 9.6V 750mAH Ni-Cd ?
5. whats the different between GWS pico and naro servo? which one should i put on the GWS e starter?

all of the items i mention above are the only item available from my LHS, so please don't recommend other brand or type.
thank you