The cheat works amazing, but how do I get this big overlay out of the way? Is there anyway to minimize it while I'm playing?

You can check the Forum section of BF 2. There should be a pinned post talking about all features and how everything works! 

Oh and by the way, this section is only for Testimonials and reviews. You should keep an eye on the section you're posting stuff on! :-)

The mordhau cheat has a lil info just upon launching it like so, perhaps the bf 2 one has something similar

So in this case I open up the ui with the insert key

If you're talking about the cheat menu its either f1 or insert. At least it is for every other cheat ive used here. Glad to see you're enjoying the cheat

You have to press F1 to hide the menu.