I wouldn't recommend putting 120 views into a single form template. Navigation will be a nightmare and performance may be poor due to the large number of views.
For combining templates, there isn't simple out of box way to do this and I'm not aware of a third party tool that does this for you as well. You can copy and paste views (ctrl+a, then copy, then paste) from one template to another. This will preserve your layout and controls, but you will need to recreate your data source and logic.