Wchich model replacement for 300E

Hi,

What model is a replacement for the FortiGate cluster HA A-P 300E devices?

- 3k hosts

- Partially Deep Inspection deploy , we want to implement extend even more DPI rules

- routing beetwen vlans/ subnets on L3 not on FortiGate

- 500 firewall policy flow mode, 300 firewall policy proxy mode, we want to switch policies with flow mode to proxy mode

- 5 VPN IPsec S2S - a database application was running through tunnel

- 10 IPsec dialup peak connection

- 3 ISP connections that give a total summary speed of 3900 Mbps

- FAZ, FCT, FML, FortiWeb Integration Stack