Be aware that most of the equipment marketed to the 4x4 community is rated at FULL BREAKING STRENGTH. The only thing that usually has a 4 to 1 or 6 to 1 safety rating is shackles. If you go to a true rigging shop most of the stuff there will have a SWL (safe working load) rating.
Where do you live? If you are around here Oregon USA, I would be more than happy to get together for a day and go over what I carry and some basic rigging techniques.
If you do go to a rigging shop explain what you are doing and what you think you need, they should be able to help you. Good luck and stay safe! Bob
1998 Land Rover Discovery 1, full roof rack, HID lights, Warn 8274, 2m 440 6m 10m ham, OME XHD 3 inch lift kit, 235/85/16 Treadwright Crawler M/T tires, snorkel, homebuilt onboard shower, Columbia Rovers fuel tank skid plate-- M416 custom off road trailer w/18 gal water tank, Mombasa RTT, still under construction :P