@height8 It's gotten cheaper to get full NKRO over USB. I got it for $75 with a Corsair Vengeance K65. The Plover community is eagerly waiting for someone to report back on a $40 keyboard that purports to be NKRO, which would be an heir to the formerly cheap and NKRO Microsoft Sidewinder.
How fast do you touch-type qwerty to have ghosting problems, though? I didn't run into them at 115 WPM.
// @jextxadore @hazardwarning