You kind of wasted your money on the atlas straps because whoopies would replace them you can get an all in one system at any of the cottage vendors (arrowhead equipment, Jacks R Better, (I suggest this one) Whoopieslings.com (Stu's and oppies store). Tarp I suggest you check out wilderness logics or, Jacks R. Better or Warbonnet (warbonnetguys store great stuff). Ridgeline I would refer you to silversurfer or Dutch (has a great store for ridge line stuff). DO NOT BUY ENO TARP OR UNDER QUILT THEIRS IS CRAP.
In your case if it really gets cold get an underquilt from one of the cottage vendors here top quilt you can get from any of these cottage vendors here. Hanging is incredibly expensive make sure you are willing to pump enough money. Hammock gear, war bonnet and wilderness logics, Jacks R. Better, go lite make good stuff for top quilts. Go lite does not make under quilts though. If it does not get that cold like 40 F I would sugeest making a pad expander or buying the Eno hotspot. Enjoy hammocking also watch Shug videos their entertaining and incredibly instructive.
Bacon and Camping makes me happy.
"When life gives you lemons throw them back"
I camp in bear country and I am a bear Burrito.