One important issue to consider if your Safari has a Roadmaster RR4R chassis is the trailing arms. Loads of info about them on most all motorhome forums. They have a design defect that causes stress cracks and can fail.
I had mine replaced with Source Engineering arms.It cost about 3K to replace them. I could not ID cracks in mine but did not want to chance it. Sure enough, when they removed them, there were cracks under the shims. It was only a matter of time.