Christmas came late. Since Darto skillets don't go above the 27cm model, I put a Matfer Bourgeat 12 5/8" carbon steel pan on my wishlist. It weighs in at 2461g compared to the No. 27's 2120g. Should be right at home. It's supposed to rain over the next couple days, but when the sun comes out I'll head outside and put some layers of walnut oil down to get it nice and seasoned. I don't keep flax oil on hand for any reason, but walnut is another "drying" oil that's prone to oxidation and should be a good alternative to flax for the initial round of seasoning. But I try not to overthink my seasoning oil choice. I digress.
EDIT/Update: After years of using cast iron and carbon steel, it's clear that flax oil isn't a great choice for seasoning pans. It produces a brittle, flakey seasoning that isn't durable. I just use whatever cooking oil I have on hand and it works fine. I also didn't care for the Matfer pan and got rid of it, replacing it with a 12" All Clad D7 to have a pan that is both very thick and also non-reactive.