Beautiful tank- sounds fancy! For the front door you would need a piece of plexiglass cut so your substrate could be deeper than the way the door opens.
The branch thickness is fine- they will love that! I have thick branches in mine as well, they climb around them!
![](http://emoji.tapatalk-cdn.com/emoji4.png)
I have heard that acrylic is not the best at holding heat and humidity- but it sounds like you are covered in that department.
I would use caution using misting- it can lead to flooding of the substrate, so you could put a false bottom in, or watch it closely.
Keep in mind the crabs will grow so that you don't overcrowd
![](http://emoji.tapatalk-cdn.com/emoji4.png)
at least keep to the 1 crab per 5 gallons (depending on the size of crab).
Keep us updated! I'd love to see what you do with this!
Sent from my iPhone using Tapatalk