Brentford is an absolute s**t pit, makes Sw***on look like Paris. We'll fill their away end and go in their home sections. Only thing going for it is that they've a few pubs. I fancy us to get the win too.
Brentford itself isn't the greatest area but is very close to a number of excellent parts of London which all have an abundance of pubs. Wouldn't bother with any of the pubs around the ground, go a bit further afield for a drink. Coming from Oxford you could easily drink in Ealing Broadway then get the 65 bus about 15 minutes down to Griffin Park and stops right outside.
On the pitch I wouldn't be surprised at all if you won. We lost to Notts County at home in the 3rd Round last season and unfortunately take Cups lightly, even resting players against Arsenal in the League Cup this season. We're struggling anyway at the moment so either way I'm not hugely confident, though there's still a good side in us somewhere.
I'm looking forward to it despite that, would expect a packed away end and have always thought you have proper support.