Yes I have one more 12.5 gallon batch to fill up the 55gallon Brandy barrel CdT project. I want to see how to work with a big barrel once, If it works out well I plan on seeking out one more and including people on it. It was kinda big endeavor to see if I could pull it off alone. I had to basically build a whole new system to brew batches that size at that gravity. But I'm so close now.
I pitched the sour blend last weekend, and should be filling it late February.
My plan with that one is to pull off 20 gallons a year and replace it with fresh beer.
As for the Berliner, may be that will be the wrong style, I'll have to think about it. I think if you are careful and don't leave it in the Oak for too long, you can get a good infsion of flavor with out over powering the beer. I want to keep it light, I've had a lot of over the top barrel aged beers. I want to see if I can do some thing subtle. With a sour note, with out other bugs.