Tough situation for sure. It's hard to have it all with trekking poles: Light, durable, long enough for a shelter center pole, highly packable etc.
One option is Black Diamonds Alpine Carbon Cork poles (16oz). They're significantly stiffer/stronger than the Black Diamond Ultra Distance Z Poles with nicer grips (IMO) too. They are a 3 section pole with flick locks, so they go really short if needed (18"??). On the downside, lighter than 16oz would be nice and they don't extend that long so they don't work in my DuoMid without an extension. I tried replacing the lower section with the longer lower section from a Gossamer Gear LT4 pole and that worked well to pitch my DuoMid without any pole jack needed, and it also saved an ounce off the poles, but it is added a weaker link.
Another option is Easton's new Ultralight Carbon 3 poles (see link). They won't be out for a bit, but they're a 3 section pole for 12.8oz. They look nice although flicklocks would be preferred.
Another option would be using Black Diamonds Distance FL Z-poles, which should be stiffer than the Ultra Distance Z-poles and they add some adjustability for fine tuning your pitch. The downside is they don't really offer any advantages over the Alpine Carbon Cork poles from BD. Weight is basically the same, they likely collapse a bit shorter but they're less length adjustable and likely less stiff.
You might be able to use a Z-pole without all the sections as long as it wouldn't cut/damage the inner cord (or open tubing end) by having the open end jammed against the ground. I'd be a bit nervous about it, but I haven't looked closely at Z poles with this idea in mind. The Ultra Distance Z poles aren't that stiff though. I tried them in the shop and felt more confident on my GG LT4 poles which are easily stiffer. The GG LT4 poles are great poles for on trail hiking, but not quite robust enough if you're doing significant off-trail/snow travel. I love the weight of the GG LT4 poles. They are a dream to use. I've snapped 'em twice (once landing on them, once during snow travel) but I continue to use them for most normal hikes. If they made a pair that comes in at around 10-11 oz (instead of 8) they could be the perfect all around poles. Those new easton poles might be close, but I bet most of the 12.8oz weight is found in the handle and 3 sections (instead of two) so they're not likely too much beefier - just speculation though.
Bottom line is it's tough to beat the BD Alpine Carbon Corks, which is why they are Skurka's pick. I just wish they were around 6oz per pole instead of 8oz because you do feel it.