When I made the plans for the MSBP, I imported the pdf of the Mini Scout plans into Inkscape, made my changes, set the page size to equal the drawing size, saved the file, then exported as a pdf.
Then I opened the pdf in Acrobat Reader DC, selected tile in the print options and looked at how Acrobat tiled the pages. Then I went back to Inkscape and moved parts around and reset the page size again, until I got the layout I wanted in Acrobat. Just trial and error.