I'm new here and really newbe in teardrop. I plan to build a 5X10 teardrop rimble design. There is my plan and of course a load of question

I want to be able to sleep 4 in there and keep my galley. I got to kids (2 and 3) so I dont want to leave them on a side tent and I plan to go on the rockies and dont want to use a tent because of bear lol.
Feel free to give me your opinion, pro and cons

And for the wall. I want to be able to use my teardrop late in fall and I'm living north and it is cold. So there is 3 idea i draw. which one is the best and is it overbuild?
Thanks
Eric
PS: Im a french canadian, so my spelling is probably weird sometime, sorry for that
