Okie dokie

I’ve got my DL DIY hammock made and ready for my DIY whoopies. I gots me some strapping and???

I think I am going with carabineers instead of the Dutch clips for know. How in the world do I select a biner? Most have a rating so how does one select? I sure don’t wanna end up on the ground in my hammock before I ever leave the house!!! LOL Thanks!