I want to build my coach out of legos

I downloaded the lego designer and it's a helpful program for sure but it's clunky to work with. The upside is it will create instructions for you. Downside it's every bit like doing it twice and real legos are easier to work with. I think a scale of 1" = 1'. I should end up with a 30" x 1 foot tall monster. Anything smaller and I am thinking details will be lost. Lots of specialty pieces I'll be needing for bin doors etc. We'll see how it goes. I'll document my build. Thinking the son and I might start soon. Sure would be nice if Lego gets back to me with a basic build sheet for one of the ones they have. Modifying an existing design would be easier than scratch. But who knows, if I nail it maybe I could sell the plans or models.