Rather than go for stainless, why not try new black appliances and then you might have money for the cabinets.
If the cabinets really need to be resurfaced, new stainless appliances might look out of place.
You might also consider hiring a home stager, and if you use them have your agent advertise that and have you home stager use it as their advertising as well.
As for the kitchen answer, it really depends on what will look best, and how old the current appliances are. Is there a way you can by inexpensive, but functional appliance, perhaps floor models, and still have money to do the cabinets?