Welcome to APUG.
As the names imply, the P'maker 35 just does 35mm. I think there's an upgrade kit to turn it into the 67.
Are you buying new or used? If used, there are lots of options that will do up to 6x6, 6x7, or 6x9 and still be compatible with a bathroom darkroom. Also, is this a bathroom that will be more or less dedicated to darkroom use or will you be setting up when needed? There have been past discussions on what enlargers work best.
You might want to specify exactly what format your GF uses. It will be a number of cold, cold nights if you mess that up again.
Finally, I suggest you include your location in your profile. You may find an APUG member with a suitable enlarger for sale.