David, what made you decide on the 12-24? Just curious. I think it would pair well with the 24-105 lens as a very capable travel pair.
My first reason was seeing it for a used price...certainly makes it more tempting. But, the 12-24mm has been in several of my gear schemes (I’ve iterated dozens of them lately!), just not in any lineup scheme I’ve posted here. I won’t lie: there’s hardly a lens available in FE mount that I don’t want, so nothing I buy should be a surprise.
But here’s my big 2019 gear plan that I have begun to execute:
Tier One: The 12-24 and 24-105 will serve as my general walkaround pair. Great for exploring, taking with me on bike rides, visiting new places, etc. I’ve missed owning the EF 11-24 and FE 24-70 F/4, and the 12-24 and 24-105 are overall better solutions! I’ve been very impressed with 24-105 shots I see posted on FM as well as on Flickr from those I follow. Liking the rendering quite a lot.
Tier Two: Critical landscapes/cityscapes are the province of my CV 12, Loxia 21 and 35 (I may sell the Batis 85 to get the Loxia 85 for a more complete landscape kit). I regard photos captured with these lenses as my most valuable.
Tier Three: I’m pretty close to finalizing my decision on a third tier of fast AF primes for the main purposes of capturing street life. These will be the 24GM, 50ZA, and Batis 135mm. I’d prefer a 100 or 105mm f/2, but that doesn’t exist natively and I think the Batis will serve that role phenomenally. These are my lowest value/importance photos, yet they are my #1 favorite to shoot. I’m buying these lenses purely for pleasure. 
Tier Four: Wildlife/Nature/Telephoto Landscapes. This will have to wait till next year and my plan includes 100-400mm plus both TCs. This is a bit speculative. I’ve had a little bird experience with a EF 500mm f/4L IS, but not sure how serious this is for me, so it’s my lowest priority.
Planning to buy an a9 (or a7 III if funds are too tight), which will be my main camera for everything but the landscapes.





