Thank you Everynone for your suggestions!
I will take a look at making the variables Instance Editable & Expose on Spawn and see if it works for me.
Question: What is that Add New Blueprint? I can’t seem to find it anywhere. 
My second plan is nearly identical to yours, I would have a huge list of variables exposed to the User (Like the Warcraft3 object editor), call a function in the AC and pipe the data in.