One of the other next big steps I need to take with my model is landscaping the baseboard to create the gradients of the ground. The land the lighthouse would have been built on was along a beach so the ground will be relatively flat however all the buildings sit at slightly different heights. I'm going to make the contours leaving room for an insert, where I can sit the buildings into the countours. This will allow me to work on both the landscape and building separately, whilst making my model more stable.
I plan to build the contours up using foam board, which will be lighter than wood. I'll then smooth then over with car body filler.