I hope all goes well for you. 

The first semester can be tough (fifteen credits is a lot for some people). I took sixteen both my first and second semester and then finally last year, I tried fifteen (which didn't work for me) and before that I had fourteen (which then was reasonable).
And now, I'm starting school again in my third year. I will be taking twelve credits. It is the lowest number of credits I can take and I hope I can do well.
The job at Disney sounds interesting. 

 What will you be doing there?
If you ever would like college advice/tips about things, I will be glad to help where I can. You can send me a 
VM or 
PM.
Take care.