That's an awesome house, pretty impressive upgrade from a 9x9. Btw, if you don't like the dripping lava from thaumcraft, I believe there is an option to disable dripping liquid particles in video settings. But that may be Optifine.
Yeah, building in Creative mode definitely made it easier. And I borrowed heavily from a house I saw in a YouTube video a while ago. The reason why I rarely build anything but 9x9s in Survival is not because I can't be creative, but because they're so easy and not very resource-intensive, and can be built fairly quickly.
I finally built this house in my Survival world though. It took a long time to finish, especially since I kept running out of resources, but it's done now and it looks awesome. I had to demolish a big chunk of a Nether fortress to build the roof, search far and wide for clay (and transmute half of my iron into clay once I got impatient) to smelt into bricks for the walls, and cut down countless trees for the house's log frame, but it was totally worth it. I'll probably add a basement for my Magic-related stuff (like Enchanting, Thaumcraft, and eventually EE3), with my machines and power generation on the first floor, and item storage on the second.
I probably won't disable dripping lava. I tend to stupidly dig up and down without taking precautions, and the dripping effect has saved me from digging up into a lava pool more than once. Besides, I like the idea of having my magic laboratory in a basement of some kind.
I'll post more pictures when I get situated, maybe after I advance a little further (I hardly have any machines beyond basic TE ore processing at this point, and basically no automation yet, because I've hardly had any time to play and I tend to advance so slowly).