Planning to build a small shade house

[Barbie_J]

I live in SW Florida and recently moved into a new home, but it's a rental so I can't build anything permanent. I don't have a large collection so I was thinking something 4'x7.5'x7.5' that will face east and be open on the front. I plan on including irrigation because this is primarily being built for my Vandas and maybe a few Cats. At my old house, I had a great setup with automatic watering on my lanai but I don't have that now and they're suffering badly.

I was thinking of using 1" PVC and making one of the top pipes do double duty as the irrigation pipe, but that part isn't set in stone. I have a few questions and if anyone has done something like this I'd love to see pictures.

For the sides and top should I use trellis or shade cloth? I like the idea of trellis because of better airflow and I could use the trellis on the sides for hanging a few Cats and the trellis on the top for hanging the Vandas. Also, there would be no sun hitting the top or sides after 2pm in the summer (or thereabouts) so I don't think shade cloth is really needed.

I'm going to use mulch for the floor because it's easy to remove if I move out and will keep the weeds down in the shade house area. That should be OK, right?

Please let me know if I'm forgetting anything. So many of you have done such amazing projects that I wish I could do, but my landlord won't give permission for anything permanent. What I need is something that can be easily disassembled when/if I move and in the event of a hurricane can be moved to my storage unit.