Just jump on a train to the city if you're looking for a good bar, heaps to choose from. I'm from Ferny Hills and there is nothing apart from the usual crappy suburban pub / bottleo around our area. A good motivation to brew your own.....
Newstead Brewing and Green Beacon are a 15 min walk from Bowen Hills Station in Newstead.
Tipplers Tap is right next to South Bank.
The Scratch is right next to Milton Station.
West End has heaps of bars: Archive, Brisbane Brewing co, Catchment Brewing Co etc and is a 15 min walk from South Brisbane Station. Or get a 199 bus from the Cultural Centre.
The Brisbane German Club is at Wollongabba and is a short bus trip from South Bank Station. Gotta be the best pub in Brisbane.
As mentioned above, Craft at Red Hill is the best bottle shop around, and it's not too far a drive from Mitchy. There's also 1st choice at Keperra and Dan Murphy's at The Gap.