Routerboard 433 and Upgrades suitable?

Hi there,

I am currently looking for a solution to build a good router for 16-128 Mbit/s Internet Access (NAT, Firewall, Wifi-AP, at least 2x Gigabit-Ethernet, preferably QoS).
Does the Routerboard 433 provide enough power to route that much traffic or do i need the Routerboard 433AH for that.
And is the following set of items enough to assemble the router completely?

  • Routerboard 433(AH) /edit: I need Gigabit, so rather the RB435G
  • R52nM Wifi minipci adaptor
  • Universal 433/435 Case
  • Pigtail Connector for SMA/MMCX
  • SMA/MMCX Antenna (same type as Pigtail)
  • Power supply?

Thanks in advance,
Fuffzehn