you can modify paper format first: click File | Page format, select your printer at bottom of the dialog and then specify your paper size. Next, enable option Visible Page Boundaries in Options. Click Settings | Options and in section Graphics, enable check box Visible Page Boundaries. You will see printable area then. As a final step, change layout of your entities to state when all your objects are inside one paper. This way you will nicely see what will be printed and what will not be printed and you will also be able to keep font in one defined value - and you will not have to change it everytime.
BTW: font settings can be specified for new models in Options in section Model | Physical model on tab Workspace.
Another tip: To change autolayout you may try to lower values in Options in section Graphics in groupbox Autolayout.