Thanks SO much for all of the responses. Based on the advice, what I'm currently leaning toward is the WBBB double layer 1.1 which will weigh 1lb 11oz. Now, the decision I'm trying to make is between this and the Hennessy Expedition, located
here, which is 2lb 9oz but includes a tarp.
Honestly the only thing swaying me toward the hennessey is the tarp. Can I get a decent tarp/fly for the WBBB at a cost that's going to put my total at about the same? Even if I upgrade the Hennessey package to a hex tarp, the price still comes out to $200, which is really where I need to be before purchasing insulation. The WBBB is $175 and I'd still have to get a tarp.