Astrill + Telecom + Which Router?

Hi there.I am about to sign up for Telecom to get the EPL special (in August), and am wanting to run a VPN through Astrill. Bascially I want to be able to :

Use DD-RWT for increased wireless speed

Use VPN for increased security

Access Iplayer UK etc with no geoblock

Have a dual channel DD-RWT / Astrill compatible router with good wireless speeds

Any suggestions to which Router would suit my needs (and should I be nervous about flashing it!). I plan on streaming alot of TV from my Imac to my main TV, hence the need for the dual channels.I am planning on using the supplied modem from Telecom.Thanks so muchWelly