I will mostly echo the previous two posts. This program seems to be designed for folks interested in policy and/or management. There is nothing wrong with that, but it doesn't come close to preparing you for grad school in engineering or physics or anything of the sort. It doesn't even prepare you for soph/jr level engineering / physics courses!
Some example portions of course descriptions that jumped out at me:
Introduction to physics with lab: This course offers an introduction to classical physics for nonscientists.
introduction to orbital mechanics: Designed for the non-scientist student
both of these courses are lower level than the physics taken by engineering or physics freshmen.
Also, the space weather course has no prereq. of electromagnetic theory. This is clearly not a science course. If you want to understand the physics of space weather, jr/sr level electromagnetic theory is an absolute minimum requirement. I pick on this course in particular since I studied space weather related physics in grad school.
If you want to go to grad school in engineering then you should major in engineering. There would be nothing to stop you from taking a few Space Studies courses as electives if they really sound interesting to you. Your idea of taking physics 1 and 2, chem, calculus, differential equations, etc., will simply give you the prerequisites for the soph/jr level engineering/physics classes, it will not give you the background to go to grad school.
good luck,
jason