OK. So, the first thing to know is aging is just a process to develop a specific flavor profile. So, depending on the flavor profile you are looking for it is possible to create a beer using a relatively short aging period and still have a flavor profile similar to a beer which is traditionally aged much longer. The hardest part it figuring out what adjustments to make and when to make them, in order to mimic an aged beer.
Last year I brewed a split batch Flander's Brown using the Roeselare yeast and Tart Cherry juice and kegged one split after only 6 months...it really had a flavor profile similar to a Duchesse de Bourgogne and most people thought it was fantastic. The key to it all was the tart cherry juice(Knudsen)...
So for your beer it'll pretty much be the same process...using tart cherry juice to mimic an aged sour...the amount you use will determine the level of sourness/tartness of your beer. And using the Roeselare yeast as your primary and only strain will add funk, leather, cherry pie/dried fruits and subtle notes of acetic acid. And you'll be able to get your wood flavor profile during your aging period, since you're using oak.
Now if you really wanted to sour the traditional way you can always do a sour mash, or you can brew a batch and start by adding lacto and then a few days later add a more traditional strain of yeast...in any case, hope this helps and happy brewing...Oh and cranberries as well. They also do a fantastic job of souring a beer.