The ultralight hennesey is rated for 200, the standard hennesey 250. I find those limits very conservative - IMO you'd probably do fine in the standard hennessy as long as you were not jumping around in it.

I use a speer type (homemade) with a nylon outer shell. I'ts very much like the link for
risk's test hammock I posted earlier for you - just finished with velcro around the outside,
a ridgeline, and mosquito net. it will do fine as well.