
Well after a bunch of downloads (26 to be exact...) and a total of 12 substitutions, the LSW Extension finally runs with all required assets. 7 subs were just to find the new file locations of existing assets, and the remaining 5 were to substitute something close, mostly vehicles. Here is the list of everything I downloaded to make the LSW run (Your mileage may vary...):
You can disregard the two ETS2 Scania truck d/l files and the RWA Veg mod and SD9 Updates.
My opinion now is that the LSW route is a very well-done extension to the RW&A Lakeside Route. It's apparent that much work was put into creating this content and I appreciate that. A bunch of hours were invested in making sure I had all the assets required, but in the end I think it's well worth it. It runs very well on my laptop with about 40-50 FPS on a regular basis.
On another note, the RWA Vegetation mod is a gorgeous addition to the basic RWA route and I highly recommend it.
I think I'm going to install the remaining RWA add-ons from the file library and play around a bit more with it. There are also a bunch of scenarios I think I'll look at.
More fun running trains!
Hope this helps anyone else who would like to use the LSW Extension.

Best,

Marc