That's why they recommend to emulate x86 Android. If your app is Java anyway, you don't need to emulate ARM.
There isn't any x86 image for Android 4.3 yet. Latest is for 4.2.2.
I've tried the x86 Android image, and its slow as hell, just as slow if not slower than the ARM version.
I also enabled Intel haXe to speed up emulation, but it doesn't help, its just as slow as ever.
I have a GTX 660 (that I'd like to try and give to the guest) and an integrated HDG 2500 (for the host). I tried both methods, and they give the same result: no signal when connecting the monitor to the GTX 660.