+1 on the DIY. If sewing a tarp doesn't daunt you, making a gathered-end hammock is easy. Get wide cloth, add triple-stitched end channels, whoopie slings and a structural ridge line. You can make it longer to suit your needs.

I would study the Warbonnet Traveler for a guide and a first choice for a purchase --- they are 65"x120" and just $75 for the double layer, which is the best choice for use with a CCF pad.

Insulation is the stinker for weight and cost. CCF pads are the lightest and least expensive, but under quilts are more comfortable. If you are used to hammocks in Central America, you probably have a little adjustment for temps under 60F