Thanks so much for the confidence boost :) I ran over the design 100 times to ensure it is completely functional. Sometimes a design might look great but in reality parts of it aren't practical. We're now focusing more on interior design than we do 3D visualization as that is where our passion is so your words mean a lot :) I am using 3DS Max for the modelling. For the purposes of demonstrating concepts to clients i would recommend sketchup - much easier.

Learn Sketchup is on my to do list. I use the IKEA and Reece online tools, which are good for quick mockups to help visualise the space with basic 3D rendering, but they can be a bit buggy and of course only have their own products to work with. I use Illustrator and photoshop for quick plans and mockups too, but only because I have a graphic design background.

eCadLite -- I'm assuming ours is Italian? Or somewhere in the EU. Great as you can upload heaps of catalogues to it.

Home design 3D is really good and easy to use for beginners https://www.youtube.com/channel/UC8Y13TBoZMo2C_mjZAzvolQ