I also agree with Moe. I wouldn't throw 68% at them right off the git.
You can check the smokes very easily by putting them in the ziplock and tossing a hygrometer in there. See where they're at and bring the RH up a little a month at a time, slow but sure.
I'd keep them way down around 60% for the finished product, maybe 63% maximum. I'd actually try them all along the way and stop increasing the RH when they were smoking nice. If that was at 55%, that's where I'd keep them.
The less you have to mess with these, the better they'll perform for you.
