I got the 3 month lead time for my 180, too. Turned out to be closer to 6 months. Well worth the wait, though. I ordered my lights, sump, skimmer, etc. through CDA as well, so delivery day was... memorable.I wish I had an interesting update but CDA is still building the aquarium. Wood shortage, then "rim" shortage, etc...
They told me they are one week from shipping a week ago.
I was quoted a lead time of 3 months early Dec. 2020. I wonder if all their builds have been taking 9+ months or if I should've been bothering them more (the squeaky wheel gets the grease).