need help with rope for full suspension

[fantasia13]

let's make this quick, i am planning to ctb via full suspension hanging (from a tree) tomorrow night. i'll be going to the hardware store tomorrow afternoon so please recommend a good rope to get there. idk much abt ropes at all but i am 5'6 and 130 pounds if that helps, it should also be under $10 preferably. thank u!

 

[Worndown]

Try to find something 1/2 inch in diameter that can hold at least 200 pounds. You need to estimate the length needed.