Thanks for the reply!

I was hoping I wouldn't have to use the stitching method... it's a huge level and the building has multiple floors that will need to be compiled and captured separately.
In hindsight the angle/lens effect may not be a big deal. But is there a way to take a screenshot from overhead of my full level but force a higher resolution image to be produced than the default resolution of my computer screen? And is there any way to force some kind of anti-aliasing as well?