Backing material under ceramic tile for kitchen backsplash between cabinets

I have just completely gutted my kitchen. I have removed all kitchen cabinets, sheetrock and insulation. Am in the process of rewiring the kitchen walls for the new installation of the cabinets and new electric range. I plan on reinsulating the walls and placing ac plywood on all the kitchen walls to ensure proper installation of base and wall cabinets. I am told that I can spackle the seams of the ac plywood like you would do for sheetrock. Is this so?? Also I plan on installing ceramic tiles between the upper wall cabinets and base cabinets. Will the ceramic tiles adhere to the ac plywood ok or should I consider using maybe cement wall board between the upper and lower cabinets??? If ok to use plywood for ceramic tiles, is there a better mastic or glue to use for this project.

Also I plan on putting a microwave oven over the top of the electric stove. Should I put an outlet in the cabinet over the top of the microwave or does the outlet go under cabinet in the wall just behind the microwave. If I put it in cabinet over microwave, do I use bx cable thru wall to inside of cabinet.?? Your help in these matters would be greatly appreciated.

 

if at all possible you n3eed to put green board or something other than plywood to stick the tile to,also the microwaves that i see under the cabinets are hardwired and no outlets, but i'll put this in the elctrical section so john or someone can answer this better than i can

 

In my past experience the recept went into the cabinet above the micro and a hole was cut into the bottom of the cabinet for the cord and plug. If the micro that you buy does not come with a cord one can be purchased and installed it should be rated for the appliance it serves

 

I have never seen a direct wire undercabinet microwave. The recep is placed in a cabinet above since no model I have encountered has enough clearance behind the unit for a recep unless the cabinets are more than 12 inches deep. Make sure the microwave has its own 20 amp circuit. The startup surge is rather hefty.