Very nice! I wish I lived closer to areas like yours.
I saw the brake pic and it looks like a GM setup from the pieces i saw. Just measure the drum for the right diameter.
Looking at the length of your rear shackle and the tilt angle you now have I would suggest you shorten the rear and lengthen the front to get the same height. The way it looks now seems like it will twist or bend a lot easier.
P.S, i was born and raised in the ghetto and never saw many trailers...
Man....I am in love with the tiny house build craze taking place here in the states. 300 to 400 square feet of living space you can take anywhere your rig can pull it and feel like home is great. Not to mention a thorn in the side of municipals waiting on a property tax check!!!!