My thoughts:
1. Have the cooler space built for the cooler you want to use. I bought my first teardrop and it was quite the hunt to find the biggest cooler to fill the space. That's a 48 Quart Rubbermaid in the photo below. Fairly small but good for about three nights with some ice. I thought about putting my cooler on a slider on this build but it would cause me to lose space that I wanted for a drawer above it. It's easy to just slide out without one since a cooler of this size doesn't weigh much.
2. Don't be afraid of a propane stove. My first teardrop had a Coleman in it and it never blinked after hundreds (?) of meals were cooked over it. Theyr'e simple, safe, and bulletproof. I LIKE my coffee in the morning. My lady and I both enjoy cooking from the galley. Spices? There for cooking!
3. Both of my tears utilize a seven gallon water jug in the galley. The containers are built by Reliance and cost $20-25 –Amazon, Walmart or any large outdoor store will have them. They've got a spigot (they make two vent types, a plug and a screw on, make sure you get the screw on vent). Once the galley lid is open, I slide the jug out over the rear edge and can use it to rinse my hands, fill the dog dish or add water to the coffeepot. It's simple, cheap and damn handy to have. I think a sink (and hidden plumbing) is wasted space in a teardop –others probably can't live without one!
Below is a photo of my galley that's seen it's first meal. It looks suspicously identical to my first tear, but a foot wider. You can see there's an open storage area behind the counter. The area to the left has dedicated oraginzers for the coffee/tea pot, two insualed cups (that function as French presses), and a spice rack. To the right is open for condiments, crackers etc.


Black furry visitors? I rarely camp anywhere that isn't inhabited by black and/or grizzly bears. I've never had a bear issue (while tear camping –I lifted my tent fly edge up one Alakan morning to find a clawed-bearing foot inches from my hand) but a can of bear spray lives inside the teardop! Great for two and four legged unfriendlys.
Next summer is going to be a great adventure for you three (counting your pooch).
Tony