Looking really good! Did you think any more about the slide out?
Like you I'm 6'2" .... I just can't settle on a design, but your words about getting dressed lying on the bed really made me think that I ought to do something similar, as I'm a creaky 59 year old, with a bit too much extra padding!
So now I'm playing with ideas in my head for a slide out too, but within the confines of a much smaller trailer.
I'm thinking maybe a slightly elevated bed (within a 5' high and 5' wide cabin), which would slide out sideways, complete with its own "headboard wall" , letting you still sit up in bed in comfort. I'll be using our substantial tent trailer as the "donor vehicle" so there will be plenty of canvas etc to play with for the slide out weatherproofing.
THe fact the whole elevated bed slides out would create a small floor space at the foot of the bed, and a small gap either side.
Then there would be just one entry door on the facing wall. Not sure how climbing in and out would work tho, as you wouldn't be swinging on and off a mattress by the door.
Anyway, food for thought, and really enjoying your build log. Thanks for the inspiration.