The originally linked pi starter kit includes an RPi 2. The RTLSDR dongle includes an antenna.
How would I know which version of the radios I have? edit: I have these
You do need the filter if you use the Pro Stick with the built in amplifier, at least according to Flight Aware. If the filter isn't wanted, the NooElec-NESDR-Mini 2 does a great job (I've used both).