I have a eureka solitaire that's a bivy style tent. It's pretty small, but I'd think you'd fit in it. I have a hard time getting in and out of it, but that's not because of my height, it's because the tent is really short

But, it is a good tent, it's very light, and it's under $100.

Where will you be using it? You might look into a hammock or a tarp too.