Welcome
I've got to agree with 81Horse on this. You've come this far, just suck it up for a bit. Worst thing that will happen is it will build character. Make no mistake about it, eating feces builds character and yes, we ALL have to do it sometimes. Will you be doing IOE with this same prick or will it be a different instructor? If it's a different guy, just show up with a smile on your face and hope for the best. You might be surprised. If it's the same guy, perhaps take some time to talk to him and figure out what you can do to make things go a little more smoothly (don't blame him...even if it is all his fault, a true prick never sees the problem may be him). Also, don't have this conversation on short final, do it when you've got some down time (preferably not in the cockpit and in private). I know it may be tough to see it from where you're sitting right now, but those IP's really do have a LOT on their plates sometimes, and some guys just aren't up to challenge. Unfortunately it sometimes takes the bad ones a while to realize it. A good IP is probably the most underpaid pilot on property (I know I'll get flamed for that one!), they are worth their weight in gold and there are never enough of 'em.
As for finishing school: Absolutely with out a doubt find the time to do that at some point, and major in something totally unrelated to flying. Medicals don't last forever and you can't return a child once you have one. Good luck and fly safe.
-Blucher:beer: