RCU Forums - Electonics for a Tiger Moth 400

I'm a little new still and am planning on getting a GWS Tiger Moth 400as my third plane. Every thing I've had until now has been RTF. I want to get a good radio, but want to spend as little as possible. I'm thinking of getting the Futabs 6exa 6 channel package.

One Futaba 6EXA Super Computer Radio system with:
R156F Micro Receiver FUTL0641
Three S3101 micro servos FUTM0033
One bag servo mounting harware (Not Included) use: FUTM2350
NT8F600B Transmitter battery FUTM1440
FBC-19B (4) Charger FUTM1830
SWH-13 Switch Harness FUTM4370
ANT-5 Transmitter Antenna FUTM5040

Should I get FM or PCM?
There are a couple different options for which servos come with it (S3101 or S3004 or S3008). What is the difference? What do I need for the TM 400?
What battery should I get?
What speed controller should I get?
What else will I need to buy?

Thanks for any help you can give me. Also if anyone has a suggested set up for a TM400 (everything but the plane) I would really appreciate it!