Desktop Application

Hi All, Im hoping someone can provide me some insight. I'll try and keep it brief. I want to build a program which can be used for an engineering purpose. I have some very basic programming skills, excel macros and Fortran way back in my Uni days. I've signed up to Treehouse to do the Python course. I need the program to use PDF drawings as a backdrop from which I can establish element sizes such as floor areas and points of position which can be extracted using a mouse to bound the areas and select the points. There will need to be a scaling option once the PDF is loaded before the data is obtained.. With this data established variation algebraic calculations will be carried out and answers produced. A couple of questions, is Python suitable to use for this type of application? Also if I want to build a user interface with fancy buttons and fancy mouse driven (shaded or the like) bounding areas and point identifications is that done within Python or is it via 3rd party software such as Kivy or the like.
Any advise or suggestions would be greatly received. Is the mountain ahead of me huge? Cheers