If you want to use the rum barrel chunks, I'd say go ahead and try it. You may want to get some 1/2 gallon jugs and try different methods/materials.
There are a lot of ways to do it, Add the wood to a carboy, add bourbon or other spirits to the wood and then add the wood or add the wood infused spirits to the beverage. Remember that blending is your best friend and leave as many options open as possible. Reserve some cider/beer/wine un-oaked so you'll have some to blend back if your beverage gets too much oak character.
There are lots of blogs and You Tube videos about using wood, I'd say spend some time considering all your options, and do a lot of test batches.