Something I noticed on the Hammock Forum and that it is probably worth raising here is that people tend to give advice without necessarily providing all the key qualifications. That isn't a dig at the people offering advice. I do the same thing, almost everyone does, but when you are asking for advice you might not notice or think about it. I know I didn't when looking for advice recently about sewing tarp hems, and it cost me time, effort and angst.
Everyone knows that there are people who use tents that are light weight or even ultra light back packers, and those that roll up in a car with gear that weighs more than they do. There can be just as much variation in the approach people take with hammocks and hammock camping. Some will use their hammocks almost exclusively for car-camps, or very rustic camps but a short distance into the woods, and they tend to favour comfort, durability, lower cost, easier to obtain, equipment and set ups. Others who want a set up with which to travel, whether by foot, or air, or a combination may have weight and bulk as significant drivers and be willing to trade durability, cost and ease of sourcing to get a smaller lighter package.
All of us will advise you with what we find that works, but we might not include why we like it or how it fits with our style of camping, leaving you to experiment.
I started out with a Hennessey Explorer Asym, not a particularly light or commodious hammock. I have tended to take my hammock on over-seas trips, sometimes backpacking, but more often car or canoe camping, but that flight means I am always trying to keep weight and bulk under control.
Having a mat that can go on the ground is very good advice. One caveat though is that if you try to use the mat in the hammock, rectangular mats make poor hammock bed fellows! I tried to double up on insulation with a first generation NeoAir and a light Climashield underquilt, and the mat only succeeded in pushing the underquilt out of position. brrrrrrr! The most versatile, but also bulkiest arrangement was a Thermarest Ridgerest Large, cut to my height and coffin tapered at both ends.
Chris