Here our numbers from a 2015 30DS.
Stove:
21" wide, 20 1/2" tall, 19 1/4" deep to front edge of countertop.
Microwave:
Overall dimension of trim ring, 23 1/4" wide x 15" tall (depth unknown, Max possible would be 17")
Looked like my cutout was around 20" wide x 13" tall.
Bedroom:
26" wide, 55" tall to top of countertop, 15" depth. If you were to set your washer/dryer combo on top of the shelf, you could get by a little more since it won't interfere with the bed sliding in.
26" wide, 50" tall, and depth would then be flexible, so long as the feet could rest on around 15" or so. You could screw down some plywood to create a shelf to extend it a little too.
Hope this helps and if you need any more info, just holler. You got this.