Keep in mind, that oak chips flavor WILL change over time. Once it's in bottles, don't expect it to remain the same. I did two batches with medium toast oak chips. While I got the nice oak flavors and aroma's early on, after about two months, the flavor changed to vanilla. Not getting the same reaction from oak cubes though. Same toast level. Of course, it could be partially (at least) to do with the oak strain. The chips I used were French, where the cubes are Hungarian... :rockin:
How is the aroma you're getting from the chips, while soaking, different from the whiskey's normal aroma? You could take a sip of the whiskey to taste the change before you add them to the brew. Just to get an idea. Of course, you'll have extracted some of the oak flavors/etc. into the whiskey.
Are you planning on pitching just the chips, or the whiskey too?