Thanks Petey and Andy,
I like your suggestions.
Two more things.
A. Does this need GFCI? I will be using a dedicated 20 AMP circuit, that is dedicated exclusively for both the disposal and the dish washer together.
B. Due to the framing of the window above the sink, there isn't much good real estate to mount a box above the countertop near the sink to control the disposal remotely. Are there guidelines (whether by code, general practice, etc.) about how run the wiring to get the power from the wall to the switch and then back to the outlet? I assume (possibly incorrectly) that there is more of a need rather than preference for BX here.
My parents house which was wired by licensed electricians have a junction box in the floor beneith the kitchen where the line switches from NM to BX, then the BX goes up to the kitchen sink base cabinet through the floor into a surface mounted switch connected to a receptacle mounted in the same J-box as the surface mounted switch. Just because their electrician did it doesn't mean it is "right." On the other hand, one might say that "right" only is that what is said by a local electrical inspector who knows the NEC (or guiding code) and the local specifics.
Again, your suggestions are greatly appreciated.