what do I need to do to my suspension

Got an 09 dclb 4x4 trd sr5. It rides and sits just fine except for a barely perceptable axle wrap when coming to a full stop.

I plan to carry a 550 lb bike in the bed and about 70 lb of kayaks on an oem roof rack. Will occaisionaly go on some pretty rough fire roads with that mostly dry but sometimes during a storm.

Read a lot about sagging or broken leaf springs so what steps do I need to prevent that?

Single leaf AAL ? 3 leaf aaL? air spring with or without onboard compressor?

Any thought

 

I think you should get some air bags since it doesn't seem that you want any lift. Trying retorching your u bolts too since you're experiencing some axle wrap I think its 70ft lbs.