Not much hope of adding ground. I can't pick up the planes on the ground properly, so you'd only hear the controller side of the convo.
Ironically when it comes to approach freqs, I can pick up the planes, but not the controllers. What a tangled web....
For the moment, TEB and CDW towers are all I can do. I _might_ be able to sneak CDW GND into the mix but that won't provide much excitement, it's mostly VFR's out of there.