Felt already better today so decided to continue building the Rivendell. The plan was to just finish the second part, but once getting up to speed it's hard to stop.
The third and final part is almost finished too. There is still one hour and fifty minutes of the last movie left, and eight bag of pieces (out of 49) so it still seems possible to finish the build in time it takes to watch the shorter versions of the movies.
There has been some quote challenging and unique techniques required to build the model and some that require quite a lot of focus to get the details right. So far it has been a lot of fun regardless. There are a lot of details that will be hidden when the build is finished, so the only way to know about those is actually building the set yourself.
While the nine hours build time seems still doable I couldn't have done it in that time alone. Luckily my youngest one has been helping me in the building which in addition to speeding up the building adds another nice thing to the mix: doing it together.