I soaked 2 oz. of oak chips in bourbon for 2 weeks for my first bourbon barrel ale, it wasn't nearly enough bourbon, or oak.
I ended up adding an oak infusion spiral and 2 cups of bourbon to the secondary.
It's been aging for 4 months (I forgot about a case in my basement) and it is real good, but nothing compared to the Kentucky bourbon barrel ale that I aged in a used whisky barrel.
You can pick up a used 5 gal whiskey Barrel for $89.00 and do it right, I have my second batch aging in it as we speak.