Welcome to Tent Talk!
Until you get to stitching all that rip-stop together, someone surely must have a Tableclothfactory.com set-up sitting around, you could use.
They are very reasonable "starter" hammocks. Comfortable. A nice prep to making hammocks. Already hemmed, just whip, and add suspension. In your weight specs.
Careful with the paracord though. Whip maybe, but way too stretchy. Not suitable for our suspension uses.
Do not pass on a local hang due to lacking equipment. Let people know. Bring what you need to keep warm and dry. You'll be surprised at what might show up to "aid" your ground experience