I would suggest that you look again because you 329 is an N frame.
Personally, for any revolver larger than the K frame I would try and avoid IWB carry for concealment. Yeah, it can be done but IMO the diameter of the cylinder will cause it to be an uncomfortable method of carry. I would also urge you to NEVER consider small of the back carry, it's a method that poses such a high risk of back injury that some police agencies now ban carrying in this position.
That leaves either shoulder carry or a high riding OWB holster, both of which work well for an N frame provided you chose quality equipment. That means a quality GUN belt and a quality holster for OWB carry and a quality shoulder holster. It also means that you'll have to think
about cover garments. Since it's getting into summer I'd suggest that you become that guy who's trademark is loudly patterned Hawaian shirts. Because the really are superb cover garments and are also light enough to be quite comfortable in the summer.