This is a great time to switch to lightweight AT gear: the big race scene in Europe has led to stunningly lightweight designs, the growing race scene in the U.S. means you can actually find stuff here now (although buying from Europe is usually pretty easy too), and the combination of the two means that you can get "obsolete" gear for pretty cheap that was state-of-the-art only a few years ago.
If you really have your heart set on a flexible bellows, then the old Scarpa F1 is ridiculously cheap (whether new or used).
For just a bit of flex in the metatarsal, the Dynafit TLT5 definitely helps with off-snow travel, although I haven't missed it in my race boots for on-snow skinning. And now that the TLT6 is available, the TLT5 will be super cheap (both new & used). Even some good off-season deals right now on the econo PDG race boot (~3.5 lb / pr).
The Scarpa Alien is comparable to the PDG, but you need to use the (included in the purchase price, I think?) separate lycra gaiter to keep out the elements. (I finally got it for my Alien 1.0 boots as a separate purchased -- very nicely designed, and vastly increases the boot's applications if you're not going to wear a lycra race suit all the time with an integrated gaiter.)
Sportiva has models comparable to the TLT5/6, but distribution is limited.
Avoid the temptation to get anything heavier!
For bindings, avoid those heavy (relatively speaking) "ST"-designated models with brakes and just get the Speed Radical (or the new Speed Turn if it ends up being distributed here). Lots of nearly weightless race bindings, but they tend to be pricey (unless you can find the discontinued Dynafit Low Tech Lite).